The Interesting Casting Choice The Office Fans Have Noticed – Looper

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OnSubreddit r/DunderMifflin, one user made the observation, "Why did casting make Pam, Erin, Nellie, Katy, and Meredith all redheads?" It is interesting that many of the show's main characters have red hair, particularly when less than 2% of the world's population is ginger, according to NBC News.

It's unlikely that "The Office" casting team deliberately sought out redheads, and that it's just a coincidence that so many talented actresses cast on the show sport the same unique hair color. Jenna Fischer has even weighed in on the discourse, as the true shade of Pam's hair has been a point of debate among fans. On her "Office Ladies" podcast, as transcribed by Cheat Sheet, Fischer said that her hair is "reddish-brown," remarking that she had dyed it for a film during "The Office's" third season, leaving it less red than it had been previously.

These kinds of keen observations are just one of the many perks of watching and rewatching "The Office," and we'll certainly be looking out for any other consistencies during our next binge of the hilarious show.

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The Interesting Casting Choice The Office Fans Have Noticed - Looper

Black vultures are eating cows alive. Now some farmers can legally shoot the protected birds. – USA TODAY

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Black vultures are killing this farmer's cows and he needs a permit to fire back

Farmer Rollin Bach says black vultures, a protected bird species, are flying in and killing his cows. A law requires a permit to kill the birds.

Mykal McEldowney and Matt Stone, Indianapolis Star

SCOTTSBURG, Ind. Sometimes as many as a dozen black vultures circle aboveJohn Hardin'sfields in southern Indianas Scott County, poised for when they spot a cold, weak or vulnerable cow. Unlike their turkey vulture cousins, which are easy to spot with their red heads, black vultures dont always wait for their meals to be dead.

The black vultures, now that's a very, very aggressive bird, Hardin said. Theyre basically waiting for the cows and calves to die or trying to kill them.

Black vultures survive, like most vultures, by eating carrion, or the remains of dead animals. That can serve as an integral part of the ecosystem: eating diseased remains that could carry sickness and spread to other animals. But unlike Indianas turkey vultures, black vultures also go for living animals: calves, piglets, lambs and other small livestock are their preferred targets.

Seemingly every day whenHardin walks out his door, he sees them. They often are perched on the roof ridge of his neighbors barn or settled on a nearby fence post watching, waiting.

It may sound ominous, Hardin said, and in a way, it is.

The livestock farmer said hes lost at least two but possibly up to four animals in the last few years because of black vultures.

When youre in the animal husbandry business, one of the worst things you want is for an animal to die, especially the way vultures do it, Hardin said. Once they get a hold of them, they pick the calfs nose off, pick around his mouth, face and navel. So then the calf cant make it very long after that.

Hardin is among a growing list of farmers who are dealing with what many describe as a reign of terror brought on by black vultures.These birds, however, are protected under an international law that regulates the hunting of migratory birds. That fact has left livestock producers across the state with a limited set of tools for how to address these birds, and with varying levels of success.

But the Indiana Farm Bureau is trying to give them another option. In early August, the insurance organization launched a new program in which livestock producers can apply for a permit to legally kill and remove a set number of black vultures from their property.

This initiative is several years in the making, but the farm bureau hopes it will have a swift impact.

When the initial volley of calls came in from those producers, we tried to figure out how we could help them, said Greg Slipher, Indiana Farm Bureaus livestock specialist. This gives them more control of whats happening on their farm.

Slipher first heard of black vultures about five years ago when he got a call from his colleagues in Kentucky warning him: Theyre coming. Seemingly overnight, black vultures started popping up everywhere on southern Indianas landscape, he said.

I got a heads up that these birds were coming my way, he said, and by golly they were right.

Black vultures have continued to expand north in recent decades across the Ohio River from their original territory in southern states. In the 1990s, there were so few black vultures in Indiana that groups dedicated to protecting migratory birds didnt even have a clear estimate.Now, a recent study based on calculations from the U.S. Fish and Wildlife Service estimates upward of 17,000 black vultures in the state.

As their numbers have grown, so, too, has the damage the black-headed birds have caused and the calls for assistance theyve spurred.The Animal and Plant Health Inspection Service with USDA has received an average of8,639technical assistance calls from participants in 2020 nationwide.

That increase can mostly be attributed to producers who are looking for help on how to manage the vultures, Humberg said.

Black vultures terrorize: Difficult to legally kill birds that are eating livestock

Still, the damage black vultures have caused is a little less easy to nail down at least at the present. A multi-year study of black vultures being led by Purdue University is currently underway. One of its goals is to better understand how many farmers have been affected,how many animals have been lost and the resulting financial costs.

A survey of only about 20 livestock producers found they lost 25 animals to black vultures in the last three years, including both adult cows and calves. A single cow can be worth more than $1,000, and for small producers, the loss of just one cow can be a major disruption to their operation.

According to outdoorlife.com, the black vulture reduction pilot program started in Kentucky and Tennessee, and includesArkansas, Mississippi, Missouri, Oklahomaand Texas. The program allows farmers with vulture problems to obtain a depredation permit.

The U.S. has migratory bird treaties with Canada and Mexico, as well as Japan and Russia. These laws were put in place to protect migratory birds, which often cross international borders, from over-hunting. Black vultures are protected under one of these treaties: The 1918 Migratory Bird Act.

Under that law, it is illegal to maim or kill black vultures without a permit, which costs $100 in Indiana. Farmers can apply for one of these permits through the U.S. Fish and Wildlife Service, but they have found the process onerous and the cost a deterrent.

It becomes a convenience issue and a dollars issue, Slipher said.

Indiana drew inspiration from Kentucky, which pioneered this program several years ago. Since then, similar initiatives have popped up in Tennessee, and most recently in Missouri all of which have worked well and had positive results, Slipher said. He hopes Indiana will see similar success.

Indiana Farm Bureau is now taking on that part of the process for farmers. The organization applied for a permit from FWS, which it received in June. With that approval, the farm bureau is paying the permit cost and can award sub-permits to its members, for free, to lethally remove black vultures.

Thats going to be to our advantage, Slipher added. We have that relationship in place already and farmers will be more comfortable reaching out to work with us on it.

Their goal is to make things as straightforward as possible.

There is no limit on the number of permits the organization can give out, but it is authorized to take only 500 vultures this year. Based on each individual producers needs, the farm bureau will set the number of vultures they can take, not to exceed five.

Producers are excited about the program. In the first week since it launched, the farm bureau already received 24 applications, and Slipher expects that number to grow as the fall calving season approaches. He plans to issue the first permit this week.

Hardin is one of the farmers who applied.

Its going to be hard to eradicate them, but I hope it helps, he said. Everybody I know is on board, and I think there is a sense of hope.

After receiving a permit, producers must report the vultures that they remove and also ensure that they dispose of them properly. That can include burying the birds, but Slipher hopes farmers will do something else. He is encouraging them to preserve at least one of the birds and hang them on the property in effigy, which has been found to be an effective method for warding off more vultures.

Humberg envisions this program becoming a mainstay, as long as it is successful.

The vultures are here to stay, and we are going to have to find ways that we can all live together, he said. If that means some birds have to be lethally removed, hopefully were minimizing the number of birds we have to treat that way and the number of cattle lost.

Contributing: Sudiksha Kochi, USA TODAY

Follow Sarah Bowman on Twitter: @IndyStarSarah.

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Black vultures are eating cows alive. Now some farmers can legally shoot the protected birds. - USA TODAY

The Talibans Aug. 31 Red Line – The Wall Street Journal

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One of the mysteries of the last 10 days is President Bidens reluctance to say a discouraging word about the Taliban. Hes been far tougher on our Afghanistan allies than on the jihadists who have taken over the country and humiliated the U.S. The reason is almost certainly that Mr. Biden feels he needs the Talibans cooperation to get Americans out of harms way in Kabul.

If that wasnt clear already, a Taliban spokesman made it crystal on Monday when he said the U.S. President had better not extend his deadline for having all U.S. troops out of the country past Aug. 31.

Its a red line. President Biden announced that onAug. 31 they would withdraw all their military forces. So if they extend it, that means they are extending occupation while there is no need for that, Taliban spokesman Suhail Shaheen told Sky News.

If the U.S. or U.K. were to seek additional time to continue evacuationsthe answer is no. Or there would be consequences, he said, adding that extending the deadline would create mistrust between us. He added that it would provoke a reaction.

That sounds like a threat in any language, and it explains why Mr. Biden has been so cagey about that Aug. 31 date, which is only a week from now. The President said on Sunday that there have been discussions about extending the deadline, though he didnt say with whom. If he meant the Taliban, he appears to have received his answer from those negotiations.

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The Talibans Aug. 31 Red Line - The Wall Street Journal

Pack Your Schoolbag with Supplies from These Portland Stores – Portland Monthly

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The school year is about to begin again, in person and for real, it seems. Given that this time last year meant a stay-at-home, online-only start for many Oregon kids, it feels like a moment to reengage in the annual tradition of stocking up on school supplies. And this year, there are extras on the list, with masks and hand sanitizer added to the crayons and folders staples.

If you are getting somebody ready for school,you can stock up and support some local Portland business in the process. Read on for our list of back-to-school essentials and the Portland businesses where you can find them.

This southwest Portland business makes bags to withstand all the kinds of weather Oregon can throw at us. Their PDX bag is waterproof, which protects students laptops, paper notebooks, and homework from getting wet and destroyed. The bags are also made to hold up against years of use or abuseperfect for middle schoolersand come in three sizes.

Face masks are now high on the school supply list, particularly following Gov. Kate Browns mask mandate, and local maker Dana Herbert has sizes to fit smaller faces, with an array of fun patterns to match your kidsparticulartastes.

Portland Leather offers a zipped leather pencil case for writing supplies and other small trinkets thats durable, sleek, and comes in various colors from nutmeg brown to cranberry red. (Heads up, Portland Leather also stocks a number of backpacks.)

With North Alberta and Division Street locations, Collage is a perfect stop for any craft and art supply needs in addition to school supplies such as notebooks, calendars, and pens. They also carry a range of daily planners, including the 2022 Agatha planner, for students to keep track of their homework and to-do list for the week, as well as a monthly calendar pages to stay on top of deadlines.

Kids are going to need to stay hydrated during school and water fountains are a COVID no-no, so Lake Oswego-based fifty/fiftys 40-ounce bottle is a great option for students. Its large, but that means fewer trips to the water fountain and more hydrated sports practices. It also comes with a three finger lid making it easy to carry it around.

Notebooks are a back-to-school essential and Little Otsus Mnemosyne 199 notebook is a great locally-sourced option. It boasts 140 pages with a date and title headerwhile youre at their Division Street store, browse the array of pens and pencils so your kid can fill it with color.

SCRAP Creative Reuse receives donations of various used school and office supplies, and sells them at extremely affordable prices. You can get all the folders you need by picking up a pack of 10, that sells for $1. Youll be able to load up on supplies here, not break the bank, and leave feeling good about redirecting waste from the landfill.

Backpack full? Now youve got to dress them up for the daily wear and tear of school. N Mississippi Streets Black Wagon offers apparel for up to 14 years old, with quality tops, bottoms, rompers, and more. A favorite from the store is the Nightingale sweatshirt that works for all genders and can keep your child warm once the cold months set in.

As school begins and fall sets in, kids may be in need of extra reading material. Green Bean Bookss Jennifer Green had some recommendations. For third to fourth graders? Ways to Make Sunshineby Renee Watsonset at Vernon Elementary Schoola new heartwarming series with local roots and a strong African American female protagonist being compared to BeverlyCleary's Ramona Quimby! The second book in this series also just came out,Ways to Grow Love.For older kids in the 6th-8th grade range, she recommends Black Boy Joy, acollection of 17 stories by Kwame Mbalia. This book offers a collection of short stories, comics and poems that celebrate the joy and wonders of Black boyhood and is written by 17 awesome Black male and nonbinary authors!

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Pack Your Schoolbag with Supplies from These Portland Stores - Portland Monthly

Marin hike: Find fall color in the countys many wetlands – Marin Independent Journal

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While some may head to the mountains for fall color, one place to find it locally is in salt marshes where pickleweed turns red in the fall.

Pickleweed is a name used for several species of plants in the genus Salicornia. We have three in Marin: Virginia glasswort (which despite its name is native to California), Pacific glasswort, aka pickleweed, and Bigelows glasswort, aka dwarf glasswort, which is very rare in Marin. Why glasswort? A species of Salicornia growing in Europe was burned to produce soda ash (calcium carbonate) starting in medieval times. Venetian glassmakers who immigrated to England in the 16th century considered it superior to the potash produced by wood ash and found it readily available in English salt marshes.

Photo by Wendy Dreskin

Why does pickleweed turn red in the fall? Pickleweed is a halophyte, meaning that it is adapted to grow in places that would be too salty for most plants. The roots can filter out some salt, but the rest is pumped to storage cells at the tips of the plant. Over the summer, these storage cells fill up. Then, the cell breaks down, dies and turns red, giving the wetlands their amazing fall color.

Whether you call it pickleweed, glasswort, saltwort, samphire, sea beans or sea asparagus, you can find this plant in salt marshes all over Marin, including China Camp State Park, Corte Madera Marsh, Tomales Bay State Park and around Richardson Bay.

We have two species of native cattails in Marin. Both grow in fresh or slightly brackish water. Cattails are named for the brown hotdog-like seed heads, which as it becomes fluffy resembles a cats tail. Earlier in the spring, a narrower hotdog of male flowers opened above it on the same stalk.

Native Americans, and todays foragers, gather the pollen produced by male flowers as a thickener for soups and stews, and as a high-protein substitute for flour. The male flowers and pollen are gone now, leaving the female seed heads. Those tight seed heads turn fluffy when it is time for the seeds to disperse. The Algonquin used the fluffy seeds to stuff mattresses; the Thompson of British Columbia and the Blackfoot tribe used them as diaper material; and Dakota, Lakota and Omaha mothers used them for pad cradles and to prevent chafing if a baby was wrapped in something less soft. Okanagan-Colville in Washington state and British Columbia used the fluff as a dressing for wounds and as insoles in moccasins. These are just a few of the amazing variety of uses for cattails.

Next time you pass cattails, take a moment to appreciate a plant that can provide people with food, shelter, medicine, clothing, baskets, shingles, waterproof mats, tinder and so much more, not to mention giving food to muskrats, crayfish, ducks and geese, and providing nest materials for red-winged blackbirds, marsh wrens and other birds. You can admire this incredibly versatile plant at China Camp State Park, Scottsdale Pond in Novato, Point Reyes National Seashore, Rush Creek and Bahia open space in Novato, and Rodeo Valley in the Golden Gate National Recreation Area.

Photo by Risa George

Many Marin residents notice the arrival of golden-crowned sparrow returning in September because of their distinctive descending three-note song, sometimes thought of as Oh, dear me because it sounds sad. Some notice that white-crowned sparrows have returned to their inland backyards, although they only saw them at the coast in the summer. Those summer birds were the Nuttalls subspecies of white-crowned sparrow, which occur only in California, while the ones returning to backyard in the fall are mostly Gambels white-crowned sparrows that bred in subarctic Canada and Alaska. (Marin also gets Puget Sound white-crowned sparrows.)

This fall, try to spot the fox sparrow, another sparrow that breeds in Alaska and returns to Marin in September. Fox sparrows get their name from the foxy-red color of most eastern and northern populations, but the fox sparrows seen in Marin are gray or sooty brown. (Red fox sparrows do show up very occasionally.) Look for a large sparrow with brownish splotches on the breast and a rufous tail.

Beginners may confuse it with the similarly sized hermit thrush, which also has a spotty breast and rufous tail, but the thrush has a white eye ring and a thin bill. Fox sparrows like to come to backyard feeders. They can also be seen foraging on the ground in leaf litter looking for seeds and insects.

Correction: Thanks to Dewey Livingston for pointing out that Olema Valley Trail crosses Pine Gulch Creek, not Olema Creek, as featured in my last column.

Wendy Dreskin has led the College of Marin nature/hiking class Meandering in Marin since 1998, and teaches other nature classes for adults and children. To contact her, go to wendydreskin.com

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Marin hike: Find fall color in the countys many wetlands - Marin Independent Journal

Preview: Toronto FC heads to South Beach to take on Inter Miami – Waking The Red

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For the second stop of their four-game road trip, Toronto FC heads to the Sunshine State to take on Inter Miami, who sit four points clear of the Reds in the Eastern Conference.

With just two wins from their last nine games, TFC sit bottom of the East and currently have the worst points tally of all 27 MLS sides. A late playoff push is still in the minds of the players, but the results will have to come sooner rather than later.

August has arguably been Miamis best month so far this season as Phil Nevilles men have picked up seven points from their last four. A dramatic 93rd minute winner from Rodolfo Pizarro sealed a 3-2 win against the Philadelphia Union in the Herons last outing.

Saturdays kickoff is set for 8:00 pm EST at the DRV PNK Stadium, with the game available to watch live on TSN.

A disappointing 1-0 defeat to Atlanta United in midweek was the latest low in what has been a rollercoaster of a season for TFC. The Reds are now 12 points behind the top seven and with 14 regular season games left to play in 2021, Javier Perezs men essentially have 14 cup-finals before the postseason begins on November 19th.

Toronto has also played two games more than FC Cincinnati and Miami, who are the two teams above the Reds in the Eastern Conference standings. Moreover, TFC cannot afford to drop more points against their closest rivals ahead of the campaigns business end.

In addition to their poor league form, Toronto has also been rocked by a growing injury list. Ralph Priso and Jozy Altidore have joined Ayo Akinola on the sidelines as long-term absentees. Priso has been ruled out for the rest of the campaign, while Altidores expected recovery time following a foot surgery is six weeks.

Tsubasa Endoh will also not be available on Saturday, while Dom Dwyer is questionable. With regards to Chris Mavinga, who has been dealing with a family matter over the last week, Perez confirmed the DRC international will not be available for selection.

Miami will be without Ryan Shawcross, Ventura Alvarado, Ian Fray and Joevin Jones through injury.

Having only scored three goals in their last four games, TFC is averaging just over a goal a game so far this season. Jonathan Osorio leads Toronto on the scoring front in MLS (4) and in all competitions (5), with Akinola sitting behind him in second on three league goals.

As for Saturdays hosts, Gonzalo Higuan has scored almost 50% of Miamis MLS goals so far this year. The Argentine has bagged eight strikes and provided four assists in 17 league appearances.

This weekends matchup will be just the second meeting in history between the two sides and the first meeting at either teams home ground. Toronto faced Miami last season at the Pratt & Whitney Stadium in Connecticut, with a late penalty from Alejandro Pozuelo sealing a 2-1 win for the Reds.

There is still lots of ground to be made up if TFC are to move off the bottom of the table and into the top seven, and with an opportunity to close the gap on one of the sides closest to them, three points should be the only thing on the minds of the Reds.

Ultimately, both teams have a major point to prove on Saturday, so will TFC begin their resurgence in form? Or will Miami record their third win in five to further bolster their playoff hopes?

Inter Miami: Marsman; Pirez, Figal, Makoun; Morgan, Gregore, Matuidi, Gibbs; Vassilev, Higuan, Robinson

Toronto FC: Bono; Laryea, Gonzalez, Zavaleta, Lawrence; Bradley, Delgado; Osorio, Pozuelo, Soteldo; Achara

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Preview: Toronto FC heads to South Beach to take on Inter Miami - Waking The Red

Changing Perspective: Women Working In Motorsports – Red Bull

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Riders at Cody Webbs Enduro clinic put their heads together to work out how theyd navigate various obstacles on dirt bikesthink muddy creek beds, steep inclines and rocky terrain. At the same time, a small group of women photographers were learning how to capture the perfect shot of the fast-paced action from Al Arena, one of the best mentors in motorsports photography.t was no less tricky a task.

Following RedBull Tennessee Knockout over the weekend of August 13th, three hand-selected photographers took part in a photo clinic in the mountains of Jasper, Tennessee. Its no secret the motorsports industry is male dominated, and that means the photographers who capture the industry are often men, too. In an effort to level the playing field, RedBull teamed up with Arena to host a workshop dedicated to bringing more photograpHERs onto the scene. The three photographers and their mentor shot an Enduro clinic where riders were also practicing their skills, and it meant carrying heavy camera equipment up and down mountainsides, clinging to trees and working hard to get just the right shot.

Luckily, the three artists were up to the task, although each comes from different parts of the country and creative backgrounds. Wrenne Evans, 27, grew up in Nashville, Tennessee and cut her photo chops shooting bands of every genre in Music City. Shes been on the road for about two years now, traveling with bands to capture their tours and shows. Amy Lentz, 35, left a career in mental health behind after stumbling across her first IndyCar race four years ago and falling in love with the sport. Lentz had worked previously with Arena, backing her up and providing a second camera angle for races. Alyssa Del Valle, 32, played basketball as a child and wanted to capture the excitement of sports on camera. She found herself photographing football for the University of Miami and other clients. Del Valle says she got a lot of work by hustling hard and asking for every opportunity she could find.

Brian Pearce at RedBull Cody Webb Clinic.

Alyssa Del Valle / RedBull Content Pool

These talented and hard-workingphotographers were matched in expertise and care only by Arena, a motorsports photography legend with two decades of experience. Arena has shot for RedBull as well as Mazda, Ferrari NA and Wired and is one of a handful of women photographers working in the industry. Arena says her parents were photographers and as a child she found their work inspiring; She still remembers the fond memory of the hemp strap on her fathers camera. Still, her teaching and mentorship wasnt specific to a single gender.

[Its] not what females need to know, but what motorsports photographers need to know, Arena says. [We learned a] lot of the basics, getting good shots, lighting, showing movement.

Together, the four trooped out to the Enduro clinic and talked through their shots, including how to pana technique Arena says leaves the focus on the subject of the photo, because the background is blurred out through motion, and the rider is crisp and sharp, almost as if time were standing still. Afterwards, Arena had each photographer choose the photos they liked best and walked through feedback on each, after which they all shared with each other.

Cody Webb and participants prepare to ride.

Amy Lentz / RedBull Content Pool

Theres art to the way you shoot, Del Valle told Lentz of her work; throughout the clinic it seemed the photographers wanted to support the others as much as themselves.

Although they do think its already headed in that direction, Del Valle, Lentz and Evans all agreed the industry needs to change and become more inclusiveespecially for women. Evans says more companies are taking diversity and inclusion seriously, and that it can feel validating to be the only woman in a male-dominated press pit at a show, but that there are drawbacks to being a female photographer, too. Lentz agrees, and says that when she shows up for work shes often the only woman there, and that getting work may require more hoops to jump through. Del Valle says sports photography can feel like a boys club, and that older male photographers with experience often act like they dont want women intruding in their spaces or even standing in the same places they plan to get the perfect photo.

There [are] very few women and the men made it clearespecially those with seniorityyou werent welcome in their space, Del Valle says.

Arena, who says even she struggles with imposter syndrome from time to time, says that over time female photographers gain more respect in their craft. She says drivers across motorsports know her now, making her recognizable and easier to accept. For newcomers, it may not be so easy, but these are exactly the challenges clinics like these hope to address. It was clear Arenas expertise, mentorship and feedback had made an impact on the photographers; at the end of the trip, Arena offered to keep messaging the photographers and give them advice on any job they might work.

Getting a little muddy

Wrenne Evans / RedBull Content Pool

It was a successful weekend, but theres still progress to be made. The photographers said that after the clinic was over theyd still need increased access to jobs, opportunities and expensive camera gear to stay on top of a fast-changing industry. With such talented, hard-working photographers engaging in ongoing education, its up to a changing industry to make room for them.

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Changing Perspective: Women Working In Motorsports - Red Bull

Red Bull Imagination 2.0: Freeride Jam Sessions with Tyler Bereman – Red Bull Australia

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As the second year of Tyler Beremans RedBull Imagination series is almost upon us, we called Bereman this week to talk about his vision for the project set to take place in September. We asked him what we can expect for the big wins, the projects impact on freeride motocross, and the Imagination footprint beyond 2021.

Tyler Bereman

Garth Milan / RedBull Content Pool

From my perspective, Imagination 2020 actually went a lot better than anticipated. We were really lucky that the dirt was some of the best dirt weve been able to work with, says Bereman on the creative collaboration with Jason Baker of Dream Traxx that brought a dream-designed course to reality. He adds, [The course] was as close as we could possibly get to what we had drawn. For the 21 days of the build that we had, it was nothing short of miraculous what Baker and his crew were able to put together As RedBull Imagination 2021 approaches, Tylers motivation is at an all-time high to build on what they established in 2020. The foundation that we built in 21 days, its still there. And our goal is just to keep adding to the course. I think this year is going to be really cool to see what comes of it.

And adding to the course is exactly what Bereman and course builder Jason Baker have done. Moving into 2021, the Imagination course will be broken down into three different sections. Were going to have the bigger jump side with the quarter pipe, the tree jumps, and add more lines and opportunity for the big side. Then the Supercross section will be a skatepark style dirt park, Bereman explains. Visually that is our goalto make it look like a skatepark. Just a ton of options. You can have one lip that you can go three different directions. Then were going to have a jib style section with wall rides, the container, and integrate some things from the heartland region like semi-trucks, tractors, and hay bales into the course. We built this course off of features that we would hit all over the world while were free riding.

Cole Seely hits the wallride at RedBull Imagination in Richards, Missouri.

Jeff Jacobsen / RedBull Content Pool

While Bereman and his production crew are still fine tuning the format of the event, the focus for this years event is: jam session. Creating space to welcome formats seen more frequently in board sport events, specifically skateboard park contests, is Beremans aim. When remembering last years event, Bereman says, I think one thing that stood out to all of the riders and everyone there on the production was when there were sessions where we would all be riding together. The night session riding that happened before the competition was a standout memory for a few reasons. Looking back to 2020 reveals Beremans driving spirit behind wanting more jam sessions, One session in particular at night that all of us were just feeding off of each other. That to me is free riding. Thats where the best riding comes because the amp levels are through the roof and were all feeding off of each other.

The idea is that the more the riders feel like they are just on a freeride session with their friends, the more they will begin to feed off of each others amplitude. With more of this freedom baked into the event, the bar will only go higher for the contest as a whole. Also, with a timed run, riders will be able to go anywhere throughout the course with no start or finish allowing them to be as creative as they can imagine. The first part of all of the athletes being there will just be these sessions, and filming these sessions, and getting everyone really hyped on the course, he says. Whatever you see goes [in this event]. Beremans perspective on the competition format changes the game for point-based results. The most creative line gets rewarded the most because a lot of us arent even doing tricks, Bereman explains.

Tyler Bereman celebrates after winning at RedBull Imagination in 2020.

Garth Milan / RedBull Content Pool

Beremans perspective is that full creative expression in freeriding is much different than freestyle motocross. Since transitioning from his racing career, Bereman has committed himself to showing the world that freeriding has no limits. Freestyle has gotten to the point where they have three double backflip and front flip tricks in their runs and its kind of over peoples heads. A lot of the average Joes sitting on the couch dont understand whats going on. Its crazy that freestyle has gotten to that point.

A lot of the free riding side of things was forgotten about. At one point it was all either racing or filling out stadiums for stuff like X-Fighters or Freestyle Events and I think there was really not many events when it came to just free riding. Free riding doesnt necessarily mean tricks, it doesnt necessarily mean racing, its whatever youd like to make it. These riders arent necessarily chasing the biggest tricks, theyre just having creativity on their motorcycle.

While the rider list is still under the confirmation process, Bereman could confirm that there will be more riders added to the 2021 roster: Still to be determined on the final rider list, but were working hard on giving everyone a shot. I really wish I could invite everyone, but with time I think well be able to open this rider list up more and more. Last year we had seven riders. This year its looking like were going to have 10-12 athletes. Having more athletes is better because it just brings those different styles and flavors to the table. Everyone has a unique individual style to their own riding.

Colby Raha, Tyler Bereman, Cole Seely celebrate at RedBull Imagination.

Chris Tedesco / RedBull Content Pool

For Bereman, though, progressing the sport and speaking to the motorcycle community is his ultimate goal with RedBull Imagination. Since paving his own lane in the space, it has since been Tylers goal to progress as an ambassador for the sport. I think in the next ten years hopefully we can just continue to build on this and open it up for riders like myself who started racing and didnt quite get where they wanted to but still can market themselves (through free riding).

I want to show these kids coming up its not all about race results and wins, its about creating content and enjoying what youre doing.

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New Forbush Bird Club journal celebrates local sightings over past year – Worcester Telegram

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By Mark Blazis| Correspondent

Worcester County has a long and rich tradition of citizen scientists contributing to the greater understanding and appreciation of our local wildlife. Since 1931, the venerable Forbush Bird Club has annually published the Chickadee, their journal, named after our state bird, chronicling the records of bird sightings here.

Its a valuable asset that they share each summer. When I got mine in the mail last week, I couldnt wait to see the results of thousands of hours of observation and careful recording of club members put together by the editorial committee led by editor-in-chief, Kevin Bourinot, Sheila Carroll, Rodney Jenkins, Mark Lynch, Paul Meleskiand Thomas Pirro.

The 90th volume covering 2020 demonstrated how valuable our great outdoors is to us as a vital escape and sanctuary during stressful periods like the deadly Coronavirus outbreak. A remarkable 246 species were found during the year.

Lynch notes that county rarities included Mississippi kite, whimbrel and western kingbird. Remarkably, sandhill cranes were observed in Hardwick/New Braintree between March 15 and July 6. Two young established the first breeding record ever in our county.

Unfortunately, the young apparently succumbed to predation," Lynch said.

While countless great blue herons have been erroneously reported as cranes over the years here, the fact is that cranes are now a real possibility to see in Worcester County.

Birds that are normally seen at sea also found their way to Worcester County. Sooty terns, blown inland by severe storms, very briefly made Wachusett Reservoir a magnet for over a hundred serious birders. The first sooties I ever saw were in the islands of the Dry Tortugas, west of the Florida Keys, where they breed.

The black and white beauties that normally find themselves fishing for bait-sized prey and squid around coastal Florida and the adjacent Gulf of Mexico found themselves helplessly blown north and deposited here.

Our county also had three winter reports of the regionally rare yellow-throated warbler. This species, normally found in Americas southeast quadrant, is not to be confused with our abundant, breeding yellow throats that distinctively bear black masks. One of the birds that stayed certainly enjoyed the pine cones smeared with peanut butter that the hosting homeowner provided.

Winter finches were few, but Lynch and Carroll, who bird Worcester County as intensively as anyone now, surprisingly found many small flocks of red crossbills in mid-to-late summer just west of Worcester.

The Forbush Bird Club, named after Massachusetts first state ornithologist, Edward Howe Forbush, is one of the oldest bird clubs in the country. Its first president, Elmer Ekblaw (1931-1935) had a Worcester County sanctuary off Rt. 122 in Paxton named after him. The club has its monthly meetings at Mass Audubons Broad Meadow Brook Sanctuary in Worcester, and leads free field trips with competent leaders most weeks of the year. To join, contact Treasurer Barton Kamp at 508-753-7463.

Whether youre a pro or a rank beginner, youll be heartily welcomed, and the annual membership fee of $15 will prove one of the best investments you can make to have the doors opened to Worcester Countys birds.

On the birdfeeder front, just before we were advised to take our feeders down because of the novel disease spreading north into our region and infecting songbirds, I had done some successful experimenting. To attract orioles and catbirds, I had been using grape jelly effectively. I found grape jam to be just as good. Blueberry worked well when I ran out of grape jelly, but the birds didnt seem go for strawberry jelly at all.

As for hummingbirds, three feeders suspended from poles worked as expected, but one on suction cups attached to our picture window wasnt being very attractive until I tied on streaming red ribbons and a red mesh bag that had held oranges. Since then, hummingbirds have noticed the little feeder and actually come to it now more frequently than they attend the other conventional feeders.

This past week, Russ Therrien launched out of Galilee and fished off the east side of Block Island, catching numerous fluke and sea bass. Rather than striking buck tail jigs as Russ would have expected, the fluke eagerly took mackerel chunks intended for the sea bass. Most of the latter were big knot heads. Disappointingly, Point Judith Light later gave up no tautog.

Fluke, or summer flounder, are anatomically remarkable. Theyre one of our delicious flatfish that includes winter flounder and halibut. They have eye-like body spots, can change color and pattern to match their bottom background, can burrow and hide, and are left-eyed.

Amazingly, as they mature, bones in their head twist, causing one eye to migrate from one side of their head to the other. Flukes both eyes are on the colored left side of their body. Their right side becomes their belly and is all white. Both our winter flounder and halibut are right-eyed.

Big old fluke females, which are larger than males, can weigh over 20 pounds. Our state record, caught by Joseph Czapiga off Nomans island on September 25, 1980, weighed 21 pounds, 8 ounces. In contrast, our much smaller winter flounder state record was just 8 pounds, 2 ounces, and taken off Georges Bank by Tom Hillebrand on July 12, 1996. There are no state records for our other flatfish.

Fluke are sneaky and aggressive hunters. While hidden with just their heads exposed, they ambush prey like sand lance, menhaden, various minnows, small scup, squid, and crabs. After their winter spawning in deep water, they move into shallower waters from spring through fall.

Not everyone likes the regulations we currently have for harvesting stripers. Widely respected George Gavutis, former supervisor at the Parker River National Wildlife Refuge, is one of them. Today, fishermen may keep one striper between 28 and 35 inches per day. Gavutis, who lives in southern Maine near the coast has preferably fished in the past for smaller schoolies.

We primarily stick to the estuaries, trolling with fly rods and an electric motor," Gavutis said. "When we hook a rare keeper, we get to experience a bit of a Nantucket sleigh ride in our small boat as the fish rips line well into the backing and serenades us with the singing reel. We used to fish all the southern Maine coastal rivers as far north as the Kennebec and a little beyond. That was when Maine was the only state here-a-bouts that allowed us to keep a 20-26 inch slot fish, which are much more abundant, healthier to eat (less bio-accumulation of contaminants), and tastier than those breeders over 28 inches.

A couple days ago, when we were at a local bait and tackle shop, we saw a young commercial fisherman tossing out 50 or more over-36-inchstripers that he had taken from the Merrimack River in a few hours earlier that morning," Gavutis said. "He was getting a mere $3 a pound for them. Those breeders would have laid millions of eggs next year. Why can't the States allow us recreational fishermen to keep even one minimally valuable fish between 20-26 inches instead of just larger, environmentally more valuable breeders?

We hear a lot about right whales and humpbacks getting entangled in local fishing gear, but just over the last few weeks, at least five endangered leatherback sea turtles were found entangled in submerged fishing gear. Some were dealt with effectively while others were improperly released still-attached and entangled likely leading to their slow and painful death.

Leatherback sea turtles originate from tropical beaches, drift and swim here for the greater abundance of food in our waters, and drift and swim back beginning now, just before waters chill. The biggest of them can weigh upwards of 900 pounds, which explains why some of them are improperly handled and ineffectively released. Optimally, those who discover one entangled should call the CCS Entanglement Hotline at 800-900-3622, the NOAA Entanglement Hotline at 866-755-6622, or the Center for Coastal Studies in Provincetown, at 800-900-3622 to ensure that release is performed right and quick.

Contact Mark Blazis atmarkblazissafaris@gmail.com.

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New Forbush Bird Club journal celebrates local sightings over past year - Worcester Telegram

Cyborg Security Integrates With Elastic Security To Disrupt Ransomware Operations with Contextualized Threat Intelligence – Business Wire

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ORLANDO, Fla.--(BUSINESS WIRE)--Cyborg Security, the pioneer in threat hunting content has developed an integration with Elastic Security to deliver unparalleled contextualized threat intelligence from its HUNTER platform. This threat intelligence enables security teams to respond more quickly to threats, like ransomware operations, without having to waste valuable time filling in the blanks using traditional indicators of compromise.

Ransomware operations continue to grow in scope and complexity, enabling adversaries to target even the most secured organizations. Additionally, with increasingly complex supply chains and integrations, adversaries can now affect thousands of companies simultaneously. These attacks not only disrupt critical infrastructure and business operations, but also result in data theft, leakage, and eroding investor confidence and customer trust.

Ransomware has become one of the most successful forms of cybercrime and is on the top of every security executives list of priority concerns, said Shimon Modi, Director of Product, Security at Elastic. The Cyborg Security HUNTER platform integration with Elastic gives security practitioners the tools they need to proactively detect and remediate ransomware threats.

Cyborg Securitys integration with Elastic Security will enable users of the HUNTER platform to integrate contextualized threat intelligence into Elastic Security natively, using the new Filebeat threat intelligence module. This ensures organizations can disrupt ransomware operators before they accomplish their objective, without the need for additional agents or appliances.

The Benefit of Contextualized Threat Intelligence

Cyborg Securitys HUNTER platform delivers contextualized threat intelligence. Analysts can determine MITRE ATT&CK tactics and techniques, malware types and capabilities, actors, targeting data, and observed behaviors within their existing tool stack. Contextualized threat intelligence means that analysts are able to react more confidently to threat detection alerts across organizations environments, without having to do time-consuming and inconsistent research.

Organizations wanting to take advantage of operationalized and contextualized threat intelligence can request a no-obligation free trial here.

Cyborg Security A Leader in the Threat Hunting Community

Cyborg Security is a pioneer in threat hunting. Cyborg Security empowers defenders and organizations to evolve their threat hunting capabilities. Cyborg Securitys HUNTER platform provides tailored threat hunt and detection packages which can be seamlessly deployed into organizations unique environments. HUNTER also delivers highly contextualized threat intelligence focused on operationalized and contextualized threat data, taking the guesswork out of security analysis.

http://www.cyborgsecurity.com

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Cyborg Security Integrates With Elastic Security To Disrupt Ransomware Operations with Contextualized Threat Intelligence - Business Wire

Cyborg Security integrates with Elastic to deliver contextualized threat intelligence – Help Net Security

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Cyborg Security has developed an integration with Elastic Security to deliver contextualized threat intelligence from its HUNTER platform. This threat intelligence enables security teams to respond more quickly to threats, like ransomware operations, without having to waste valuable time filling in the blanks using traditional indicators of compromise.

Ransomware operations continue to grow in scope and complexity, enabling adversaries to target even the most secured organizations. Additionally, with increasingly complex supply chains and integrations, adversaries can now affect thousands of companies simultaneously. These attacks not only disrupt critical infrastructure and business operations, but also result in data theft, leakage, and eroding investor confidence and customer trust.

Ransomware has become one of the most successful forms of cybercrime and is on the top of every security executives list of priority concerns, said Shimon Modi, Director of Product, Security at Elastic. The Cyborg Security HUNTER platform integration with Elastic gives security practitioners the tools they need to proactively detect and remediate ransomware threats.

Cyborg Securitys integration with Elastic Security will enable users of the HUNTER platform to integrate contextualized threat intelligence into Elastic Security natively, using the new Filebeat threat intelligence module. This ensures organizations can disrupt ransomware operators before they accomplish their objective, without the need for additional agents or appliances.

Cyborg Securitys HUNTER platform delivers contextualized threat intelligence. Analysts can determine MITRE ATT&CK tactics and techniques, malware types and capabilities, actors, targeting data, and observed behaviors within their existing tool stack.

Contextualized threat intelligence means that analysts are able to react more confidently to threat detection alerts across organizations environments, without having to do time-consuming and inconsistent research.

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Cyborg Security integrates with Elastic to deliver contextualized threat intelligence - Help Net Security

OPINION EXCHANGE | Technology in all its glory and squalor – Minneapolis Star Tribune

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On a high summer afternoon we were swimming at a state campground beach. A family of campers, a couple with a young son perhaps 5 or 6 years old splashed in the shallows, laughing and chattering, apparently enjoying themselves on a sweet afternoon. But my spouse overheard the following exchange between mother and son:

Boy: "I want to go home and be on the internet."

Mom: "We can't do that out here."

Boy: "I know. That's why I want to go home, to play games and watch a movie."

Mom, teasingly: "What would you do if you couldn't ever be on the internet again?"

Boy: "I'd go underwater and hold my breath until I died!"

As an aging boomer, whose household didn't own a temperamental black-and-white cathode ray tube television until I was that boy's age, I'm careful what I make of his comments. First, of course, he's a child and likely doesn't fully comprehend the nature and implications of death and suicide. Words spill out easily (though it would be reckless to discount them). Second, given the same tech he has, I might also have preferred cyberspace to the beach.

But the point is, I don't. That's not to imply the internet and technological infrastructure driving it doesn't have value certainly it does. Nevertheless, I was disturbed by the conversation and suspect that many of my peers would also find it cringeworthy. Was it about values or merely taste? Worldview or fashionable entertainment? Childhood toys or tidal wave of the future? I thought about the rollicking, uber-gamer novel "Ready Player One." The scraps tossed to conventional reality seemed forced and obligatory like, we'd rather live in cyberspace, but I suppose flesh-and-blood must be served. At least for now. I do believe that ultimately we only truly value what we cherish, and only protect what we value. I value the beach, the lake and the old white pines on the shore. What do that boy and his generation value? Now, and as adults? They are the inheritors of what current society bequeaths them, and our primary gift has been information technology in all its glory and squalor.

At the end of our rural driveway in northeastern Minnesota there is now a junction box for fiber optic cable. At a reasonable price we could have that line extended to our log house. We haven't. It's not a Luddite impulse. If we had a home business that demanded the speed and bandwidth fiber optics provides, it would be a boon. As it is, the cable would merely allow us to watch more movies and play elaborate online games. Maybe that will seem important someday. Many consider the cable a blessing, but I'm not sure. What is the ultimate impact of a technology that makes it easier to spend more passive and captive hours in front of screens watching other peoples' fantasies not only purposely fictional entertainment, but social and political propaganda presented as truth? Is that passivity inevitable?

The dystopian arguments have been made for 70 years. Ray Bradbury published a short story in 1951 entitled "The Pedestrian," about an American society in 2052 where a man is arrested for going on an after-dark walk in his residential neighborhood instead of being inside watching television. A robotic police car delivers him to the Psychiatric Center for Research on Regressive Tendencies.

In his 2019 book "Novacene: The Coming Age of Hyperintelligence," scientist and inventor James Lovelock, a creator of the Gaia hypothesis, and 100 years of age in '19, lays out the semi-immediate future. He cogently argues that after three centuries the Anthropocene the age of human-made, planet-altering technology is already ending. It's been driven by the exploitation of fossil fuels, that is, stored solar energy. In the Novacene Age, our machines he terms them "cyborgs" will attain ascendancy and independence "when [direct] solar energy is converted into information." Our function, or more specifically, the function of our scientists, engineers and coders is clear: "We can be almost certain that an electronic lifeform such as a cyborg could never emerge by chance from the inorganic compounds of the earth the emergence of cyborgs cannot be envisioned without us humans playing a god-like, parent-like role."

So we're responsible for the initiation of the Novacene, and Lovelock considers that the redeeming feature of Homo sapiens because the cyborgs require the same planetary temperature range to survive as do we and they will therefore stem/reverse global warming. He assumes their main tools will be the biological processes already extant, those that the Anthropocene has compromised to the brink of catastrophe. The cyborgs will accomplish this because given Moore's Law (exponential increases in computing power), they'll be processing information 10,000 times faster than we can. With that disparity, how will they view us? Lovelock theorizes the cyborgs will consider us in the manner we regard house plants, or maybe pets.

Thus out of the dangerous transformations of our Anthropocene is provided the remedy: Our evolutionary descendants, electronic life-forms as Lovelock insists they'll be will clean up our mess in their self-interest. What happens to us is unclear, but it's hard to imagine a relatively rapid wholesale revamping of the Anthropocene without human casualties.

Far-fetched? Maybe. But how many of our devices, appliances and tools are already connected to the "internet of Things," and when was the last time you heard or read a news item or advertisement about tech that didn't mention AI artificial intelligence? What Lovelock is saying is that there's nothing artificial about it that a machine age is the inevitable result of our digital technology, and we'll be eclipsed by it.

Vantage point is important. A half-century ago when we saw the first photographs of our planet from space, we were collectively stunned by the beauty, but it was science fiction writer Arthur C. Clarke who noted that the images indicated we were in error to call our world Earth. It obviously should be called Ocean. So when we glibly talk about "tech" or "IT" or "AI," perhaps it would be more appropriate to speak of metamorphosis. Or paradigm shift. Or salvation. Or apocalypse. Too early to tell.

As Bradbury's protagonist in "The Pedestrian" savors his nighttime stroll, he regards the houses of his neighbors as, "The tombs, ill-lit by television light, where the people sat like the dead, the gray or multicolored lights touching their faces, but never really touching them."

That's probably too harsh an assessment of the typical screen enthusiast of 2021, but we know those faces fixated on glass, and the youngster at the beach longing to return to his portal into an alternate reality. Perhaps he'll welcome the cyborgs, or maybe the transition to the Novacene Age will be seamless for his generation just one more app to a tipping point where online presence is barely distinguishable from the outdoor world. Only old fogies or malcontents will be sent to the Psychiatric Center for Research on Regressive Tendencies, though it'll probably be cleaner for the cyborgs to simply uproot plants that aren't doing well, and euthanize pets who make a mess in the house.

Lovelock's Novacene represents the authoritarian view that we'll significantly respond to anthropogenic climate disruption only if we're forced to, or if someone else does it for us cyborgs being the epitome of deus ex machina. Political observers have noted a global trend toward more autocratic governments, and one critique of democratic societies is that they are slow and cumbersome in responding to challenges like the pandemic and climate change.

An alternative to denial or dictatorship, and the path celebrated by the Biden administration, is crisis-as-opportunity. In short, mitigating climate change can generate new businesses and jobs while giving us a healthier environment and a more prosperous economy. We don't deny or coerce, but rather encourage, assist and nurture. Of course we must also convince, cajole and ultimately vote not only with ballots, but with our wallets and our time. It is the rockier route, but it offers us more control. Something big will happen on the climate change front, and it might be best if most of us were driving events. It could be another inheritance we leave to the kid on the beach.

Peter M. Leschak, of Side Lake, Minn., is the author of "Ghosts of the Fireground" and other books.

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OPINION EXCHANGE | Technology in all its glory and squalor - Minneapolis Star Tribune

Ranking every UFC featherweight champion through history – FanSided

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We rank the UFCs featherweight champions, men and women, from worst to best.

The featherweight division has hosted some of the greatest fighters to ever grace the sport. From the phenom that is Cris Cyborg Justino to all-out superstar Conor McGregor, the division has always produced the goods for fight fans over the years. After a dominant five-year stint as champion, will Jose Aldos legacy see him claim the top spot, or has Amanda Nunes complete and utter supremacy see her inch her way to No. 1? We look at the best fighters from the UFCs featherweight division, from worst to best.

With a 46-0 kickboxing record (30 TKOs), Germaine De Randamie is no joke. There is no avoiding the fact that she was subject to mass scrutiny after refusing to defend her title against Justino in 2017. The overwhelming criticism that she was not fulfilling her duties as champion was followed by the promotion stripping her of the belt. Although this undoubtedly tainted her legacy after claiming the belt from Holly Holm at UFC 208 (a controversy in itself), De Randamie still stands as a top contender in the bantamweight division. Going 3-1 since the incidents of 2017, De Randamie is still widely considered as one of the best female fighters on the planet.

The current champion has limitless potential, lets get that straight. However, his run as champion so far has been somewhat overlooked by fans. Wins over Mendes, Aldo and Holloway back to back to back? How can he be so low on the list? Well, its the way the previous two fights played out. Although the majority of folks would argue that Volkanovski won the first meeting pretty clearly, his second clash with former champion Max Holloway left a bad taste in everyones mouth. A razor close decision saw Volkanovski retain his title back at UFC 251. With a resume like his, its unquestionable that he is currently the best featherweight in the world. However, as tensions rise in the lead up the clash with Brian Ortega, that could all change in the blink of an eye.

The hype around Justino in the lead up to her debut was real. The UFC essentially made the womens 145 pound division around her, and it paid off. Headlining multiple cards, Justino snatched the gold belt just three fights into her UFC career. In a one-sided affair against Tonya Evinger at UFC 214, Justino made it 12 KO/TKO stoppages in a row. Her first defense came against Holly Holm, a decisive victory which further cemented Justino as one of the best women to ever do it. However, the question on everyones mind was this: who isthe best? With Nunes tearing through challenger after challenger at bantamweight, an all-Brazilian clash was the fight to make. After clocking in one more title defense, Justino and Nunes met in a frantic, minute-long flurry which seen Nunes send Justino off her feet with an overhand right. A fight years in the making, over in 51 seconds. Worth the wait? Absolutely.

McGregors 2013-2015 sweep of the featherweight division will go down in history. As if witnessing a spectacle, fans tuned in eagerly every time the Irishman fought. Will Mystic Mac deliver? Yes, he will. Racking up five wins in a row, McGregor challenged for the interim belt against Chad Mendes at UFC 189. In a bloody, scrappy main-event, McGregor found Mendes chin with a straight left and closed the show in the second round. The stage was then set, McGregor vs. Aldo was scheduled. Regarded as the most anticipated fight in UFC featherweight history, McGregor ended things in a flash, scoring a 13 second knockout over the champion. Previously undefeated for a decade, Aldo was distraught. McGregor then decided to scrap the featherweight division for good, and spent his later years bouncing between lightweight and welterweight. With no defenses, one may argue that his spot is undeserving. However, the manner he won the belt and the magnitude of fans and hype he brought to the sport must be taken into account.

Holloway is beloved by fight fans around the world. The former champion looked unstoppable during his streak of 13 wins, breaking his opponents down with output statistics never seen before. After winning the belt from Jose Aldo and defending it, Holloways massacre of Brian Ortega led fans to believe he was unstoppable. After losing a close decision to Dustin Poirier at 155 for the interim belt, Holloway again defended his featherweight strap against veteran Frankie Edgar. Volkanovski stepped up when all hope for the division seemed lost, and took the champion to a decision, edging out Holloway and claiming gold. After a decisive rematch, its hard to argue against the prospect that Max Holloway will be champion again at some point in the future, and his recent dissection of top contender Calvin Kattar is leading fans to believe he has reached his peak. An awful, awful prospect for the rest of the division.

After the aforementioned clash with Justino, there was no longer doubt in fans minds regarding who the best female fighter on the planet was. Nunes absolute domination of her opposition is unmatched. In a bloody beat down of MieshaTate at UFC 200, Nunes compiled eight championship victory wins, with her most recent coming against Megan Anderson in just two minutes of the first round. It is a rarity to come across a fighter with no weaknesses, no holes in their game to target and execute upon. Nunes is that fighter. Flawless Jiu Jitsu, powerful striking and ferocious clinch work have allowed Nunes to climb the ladder of greatness, where she sit alone as the greatest female fighter in the world.

When we think featherweight, we think Jose Aldo. For years the Brazilian dominated the WEC and UFC rosters. 5 round thrillers with Mendes and one-sided beatdowns against greats such as Urijah Faber and Jeremy Stephens have cemented Aldo as the greatest champion in featherweight history. He is divisional royalty, and it doesnt stop at 145. Aldo has now made the cut to bantamweight, coming up short in a title fight against Petr Yan last year, but managing to re-establish himself as a top contender with recent wins over Marlon Vera and Pedro Munhoz.

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Ranking every UFC featherweight champion through history - FanSided

Darth Maul In His Conceptual Form Is Now A SDCC Exclusive Statue – Pirates and Princesses

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As he appeared in Iain McCaigs Phantom Menance concept art, Darth Maul is now an SDCC exclusive statue from Gentle Giant. The statue stands at 11 tall and is limited to only 750 pieces. The Sith apprentice can be pre-ordered now for $120.

Mauls concept appears quite similar to how he was portrayed in 1999 by martial artist Ray Park. Darth Maul, though very enigmatic, became a Star Wars icon, much like Boba Fett.

Before there was Darth Maul, there was the idea of Darth Maul, and this bust is based on that amazing idea! Inspired by Iain McCaigs concept sketches of the famous Sith Lord, this 1/6 scale Bust shows Maul in his high-collared outfit, and stands approximately 7 inches tall. Limited to only 750 pieces, it comes packaged with a limited-edition certificate of authenticity in a full-color box. Sculpted by Rocco Tartamella.

McCaigs concept art hints at something more sinister than what we got in Episode 1. Maul was no doubt intimidating, mainly because of his appearance, unique lightsaber, and silent demeanor. However, he lacked any defining character. This artwork gives us a glimpse at something lurking under the tattoos.

Darth Maul didnt have much character in The Phantom Menace, but he was the face of the films marketing campaign. Everywhere, and I do mean everywhere, Mauls mug was plastered on everything. KFC? Yup! Candy? Yup! Marital aids? Probably! Even if you didnt know anything about Star Wars, you knew Darth Maul in 1999.

Thankfully the expanded universe fleshed out the Zabraks journey after he somehow survived being sliced in two by Obi-Wan. Though he would live the rest of his life until just before A New Hope as an outcast and half-cyborg, his story is an interesting one to follow.

What are your opinions on the Sith apprentice? Should he have been more talkative in Episode 1? Has he been redeemed throughout The Clone Wars? Let us know in the comments.

[Source: Gentle Giant]

Pirates & Princesses (PNP) is an independent, opinionated fan-powered news blog that covers Disney and Universal Theme Parks, Themed Entertainment and related Pop Culture from a consumer's point of view. Opinions expressed by our contributors do not necessarily reflect the views of PNP, its editors, affiliates, sponsors or advertisers. PNP is an unofficial news source and has no connection to The Walt Disney Company, NBCUniversal or any other company that we may cover.

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Darth Maul In His Conceptual Form Is Now A SDCC Exclusive Statue - Pirates and Princesses

Gunnm, aka Battle Angel Alita – the Greatest Manga You’ve Probably Never Read!* – Comic Watch

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*individual results will vary

What draws you into a story? What makes a tale a page-turner, going from just an interesting read to a journey across another world? Well, individual results may vary, but for me, its a riveting story, nuanced characters, and deep world-building, packaged in a genre that is at once sombre and darkly-toned, and also technological and gritty. Its one of those rare diamonds in the rough, a story that speaks to your soul while it feeds your mind and piques your imagination.

And no other story has done this for me like the manga Gunnm/Battle Angel Alita.

Admittedly, this manga is a niche title. A post-apocalyptic, sci-fi/cyberpunk epic, known as Gunnm (Gun Dream) in Japan and other manga-saturated countries (France, Germany, Italy, Russia etc), and Battle Angel Alita for English-speaking audiences. A 23-year-old manga artist (or mangaka as they are known in Japan) by the name of Yukito Kishiro began drawing Gunnm in 1990. The main character, known as Gally in the original, was actually a reworked cyborg police officer character in an unpublished manga called Reimeika. Gunnm was Kishiros first big break, and he had trouble believing it was real until he saw his work in the pages of Shonen Business Jump, a trade magazine for serialised manga comics in Japan in November 1990.

The original series (OS) of Battle Angel Alita ran from Dec 15, 1990 to April 1, 1995 (9 volumes), and spawned two sequels, Battle Angel Alita: Last Order (20002014 with 19 volumes) and the ongoing Battle Angel Alita: Mars Chronicle (2014 to present, the 7th volume only recently released in English). Thats 36 volumes (and still growing) of top quality manga to discover!

Just What is This Manga Stuff, Anyway?*

*For those that are well versed in manga, you can skip ahead to the next section.

Just in case youve never had the opportunity or good fortune to read a great manga before, Ill start at the beginning. Manga is the name for Japanese adult comics. Yes, adult. Definitely NOT for kids. As such, they can cover all the usual adult-orientated themes such as love, hate, infatuation, anger, desire, crisis, emotional anguish, war and gruesome deaths. Theres usually a good helping of that last one. They are very popular in Japan, and monthly, serialized mangas have been produced for years, and in some cases decades.

So what, you might think, Ive been reading [insert your favourite, long-running superhero epic here] for literally years. Im not afraid of an ingrained franchise. Well, where western superhero epics change artists, writers and sometimes even publishers and flex with the ideologies of the times, mangas can be one writer/artist affairs, and it can be their lifes work. Thats dedication, folks. As such, they can be a deep dive into the psyche of the mangaka (as they are called), and explore topics that will bounce around in your head for years!

Also, manga can be slightly problematic for the new, western reader. This is mainly due to the lens of Japanese culture through which the story is told. This can be confusing for a reader lacking context, but if you are aware of it, there are a host of rich, and fascinating stories to discover and enjoy.

Wait, Ive Seen the Movie. Isnt it the Same? Wont Reading the Manga Ruin a Sequel?

Like most movies, 2019s Alita: Battle Angel, while being faithful to the source material, is not the exact same story. It changes the order that things happen, has a character that appeared in the OVA (short anime from the 90s) that isnt in the manga, and ends around the first third of volume 3 of the 9 volume original manga run. Also, reading forward will not spoil future movies. While its expected that future instalments will borrow beats from the source, it will still be its own telling, and will vary enough from the original work to keep you surprised and entertained, so no worries there.

And while the movie is fantastic (the best western adaptation of a manga to date), there is so much more in the manga. You are really missing out if you dont give it a shot.

But What Makes Battle Angel Alita So Good?

Battle Angel Alita (BAA), at its core, asks the reader some very deep questions. Its heavily influenced by the cyberpunk genre of the 1990s, and so asks the classic cyberpunk question of what makes us human? But beyond that, it delves into the questions of what is fate, can we overcome our own karma, and even in the depths of despair, can we persevere? All good, interesting stuff.

Then theres the world-building. Post-apocalyptic? Check. Stratified society, where the haves live above and isolated from the have-nots who toil below? Check. Wasteland outside the city walls with roving bands of killers? Check. Dangerous, gritty, grinding existence within the walls, where those with the will to survive replace their flesh with machines in an effort to survive? Check. Violent combat sports displayed on every screen? Check. Police replaced with bounty hunters who collect heads for pay? Check. Check. Check.

And yet there is kindness in this future dystopia.

This sky city, known by various names in the various editions, including Zalem, Salem, and Typharies, dumps its waste out a chute in the bottom which lands in a big scrap pile that the dirt-siders scavenge through for resources. One such denizen of The Scrapyard is Daisuke Ido, a cyberdoctor who helps out the downtrodden cyborgs of The Scrapyard, is picking through the trash pile looking for useful parts one day when he discovers the torso of a deactivated cyborg. It is female, and hes surprised to discover that her brain is still alive (the only part of her that is biological). He takes her back to his surgery and rebuilds her over months. Shes lost her memory, through some traumatic experience that may have been the reason she was there in the first place.

Cyberphysician Daisuke Ido finds a deactivated cyborg torso in the scrap pile under the floating city, but the brain within is miraculously alive!

Ido gives her a name, Gally in the original Gunnm, or Alita in the English translation. This young woman has to relearn her context within her new surroundings and then begins a journey in search of self, and she has a lot of self to rediscover.

Alita, Her Friends and Her Foes

Alita, at her core, is a force for change. Whether it is those that ally with her, recognising her strength and perseverance, or those that fall before it, BAA has a long list of side characters, many of whom really grow on you, and some of which die horribly. This gives Alitas actions real consequences, which she surely struggles with at times. At her core, Alita is a character you can relate to. Shes no Mary Sue. Alita is in fact a true, struggling example of ourselves. Youll find something in her attitudes, choices and growth throughout the story that resonates with you.

The supporting characters are many and varied, from her love interests (this isnt a romance manga, so there are only a few), those who are attracted to her, and those that choose to help her on her path as they see the value and strength of her convictions. From the shallow teen Hugo (or Yugo in some translations), obsessed with getting to Zalem, who is Alitas first love, to the rebel radio operator Radio Kaos, with the power of psychometry (able to extract memories and skills of the previous owner of objects), the supporting cast is strong, varied and have their own arcs running in the background.

The foils on Alitas journey are many and varied, from the massively-framed endorphin addict Mukaku, who kills for pleasure and to feed his need for brain tissue, to the amoral mad scientist Desty Nova, to the chief of the Ground Investigation Bureau (GIB) of Tipharies (Zalem) Bigott Eisenburg, Alitas adversaries keep her on her toes. And yet they are not all bad.

All the major characters in the first 2 Alita Chronicles the Original Series and Last Order.

All is Grey, and Thats OK

Just like life, Alitas interactions with the other characters during this amazing tale are not all cut and dried. Nova ends up helping Alita on almost as many occasions as he puts roadblocks in her path, for example. Yokito Kishiro has said in interviews that, just like in life, most people in his epic story act in a manner they believe to be correct. In this same vein, Alita discovers the flawed, yet all too human side of quite a few of her foes, and comes to understand their motivations, even while she is besting them. This gives the story a solid grounding, with characters that feel like they could really exist.

Another facet of this terrific manga that really draws you into the story is the art. Kishiro-kun is both writer and artist, and his style, while subtly morphing over 30 years of working on this epic title, has strong detail, great characterisation, and a fluid sense of high-speed movement. This all comes together to draw you through the story, and if post apocalyptic cyberpunk is your jam, will have you staying up late, not wanting to stop reading!

Alitas fighting style, Panzer Kunst, involved training in zero g, which allows her to move through the air in a fight like a parkour master.

Battle Angel Alita wastes no time in getting stuck into the story. There is little filler. Its like a rollercoaster ride that hits top gear and just keeps right on going. Its a favourite of mine, and it might just become one of yours, too.

Give it a shot. Available on Kindle, Bookwalker, comiXolgoy, Google Play, iBooks, Kobo, nook, and in dead tree format from Amazon and most reputable booksellers. Also, as of August 2021, a new, small format softcover version has been released to English audiences.

Gunnm, aka Battle Angel Alita the Greatest Manga Youve Probably Never Read!*

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Gunnm, aka Battle Angel Alita - the Greatest Manga You've Probably Never Read!* - Comic Watch

Machine learning links material composition and performance in catalysts – Nanowerk

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Aug 23, 2021(Nanowerk News) In a finding that could help pave the way toward cleaner fuels and a more sustainable chemical industry, researchers at the University of Michigan have used machine learning to predict how the compositions of metal alloys and metal oxides affect their electronic structures.From left to right, diagrams show an oxygen atom bonding with a metal, a metal oxide, and a perovskite. The new model could help chemical engineers design these three types of catalysts to improve the sustainability of fuel and fertilizer production as well as the manufacturing of household chemicals. (Image: Jacques Esterhuizen, Linic Lab, University of Michigan)The electronic structure is key to understanding how the material will perform as a mediator, or catalyst, of chemical reactions."We're learning to identify the fingerprints of materials and connect them with the material's performance," said Bryan Goldsmith, the Dow Corning Assistant Professor of Chemical Engineering.A better ability to predict which metal and metal oxide compositions are best for guiding which reactions could improve large-scale chemical processes such as hydrogen production, production of other fuels and fertilizers, and manufacturing of household chemicals such as dish soap."The objective of our research is to develop predictive models that will connect the geometry of a catalyst to its performance. Such models are central for the design of new catalysts for critical chemical transformations," said Suljo Linic, the Martin Lewis Perl Collegiate Professor of Chemical Engineering.One of the main approaches to predicting how a material will behave as a potential mediator of a chemical reaction is to analyze its electronic structure, specifically the density of states. This describes how many quantum states are available to the electrons in the reacting molecules and the energies of those states.Usually, the electronic density of states is described with summary statisticsan average energy or a skew that reveals whether more electronic states are above or below the average, and so on."That's OK, but those are just simple statistics. You might miss something. With principal component analysis, you just take in everything and find what's important. You're not just throwing away information," Goldsmith said.Principal component analysis is a classic machine learning method, taught in introductory data science courses. They used the electronic density of states as input for the model, as the density of states is a good predictor for how a catalyst's surface will adsorb, or bond with, atoms and molecules that serve as reactants. The model links the density of states with the composition of the material.Unlike conventional machine learning, which is essentially a black box that inputs data and offers predictions in return, the team made an algorithm that they could understand."We can see systematically what is changing in the density of states and correlate that with geometric properties of the material," said Jacques Esterhuizen, a doctoral student in chemical engineering and first author on the paper in Chem Catalysis ("Uncovering electronic and geometric descriptors of chemical activity for metal alloys and oxides using unsupervised machine learning").This information helps chemical engineers design metal alloys to get the density of states that they want for mediating a chemical reaction. The model accurately reflected correlations already observed between a material's composition and its density of states, as well as turning up new potential trends to be explored.The model simplifies the density of states into two pieces, or principal components. One piece essentially covers how the atoms of the metal fit together. In a layered metal alloy, this includes whether the subsurface metal is pulling the surface atoms apart or squeezing them together, and the number of electrons that the subsurface metal contributes to bonding. The other piece is just the number of electrons that the surface metal atoms can contribute to bonding. From these two principal components, they can reconstruct the density of states in the material.This concept also works for the reactivity of metal oxides. In this case, the concern is the ability of oxygen to interact with atoms and molecules, which is related to how stable the surface oxygen is. Stable surface oxygens are less likely to react, whereas unstable surface oxygens are more reactive. The model accurately captured the oxygen stability in metal oxides and perovskites, a class of metal oxides.

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What Is Nanotechnology And How Is It Impacting Neuroscience? – Forbes

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Hand holding magnifying glass looking for new ideas

Nanotechnology is one of those buzz words that can seem kind of difficult to pin down. So what exactly is it? For example, how does it differ from traditional chemistry and physics? And in particular, what does it offer the study of the brain and neuroscience?The answer, in fact, is quite a lot.

The original ideas and concepts of nanotechnology are usually attributed to Richard Feynmans famous Theres plenty of room at the bottom talk in 1959, the Nobel Prize winning physicist from the California Institute of Technology. Fifteen years later in 1974, Norio Taniguchi from Tokyo University coined the actual term nanotechnology. Over the last twenty years or so, it has had significant impact on how scientists study and interface the brain, including offering new approaches to treat neurological disorders.

Nanotechnology is an interdisciplinary area of science and engineering that focuses on technologies and methods capable of manipulating and controlling materials and devices at a molecular scale using physical or chemical methods, or both. Typically, this takes place within a range of about 1100 nanometers (nm).

One nanometer is a billionth of a meter. Thats nine orders of magnitude smaller than a meter. Or 1/1,000,000,000. Thats just under 0.00000004 inches. In contrast, one centimeter is 1/100th of a meter, or two orders of magnitude smaller, i.e. the inverse of two times ten. A millimeter is three orders of magnitude smaller than a meter, or 1/1000. It is difficult to intuitively grasp how small of a unit of measurement a nanometer is.

Heres an example that will give you an appreciation of the size difference, not in spatial scales, but in temporal scales: Normally, you wouldnt attempt to walk from New York City to San Diego. It would just take too long. But a one order of magnitude change, in other words, being able go walk 10x faster, would be the equivalent of going from walking to driving. For example, say you can walk at 3 miles per hour. Driving takes you to 60 or 70 miles per hour. Now youd be able to get across the country in a few days. A two order of magnitude increase in speed is the equivalent of going from walking to flying. Itll get you across the country in a matter of hours. Three orders of magnitude is not technologically possible. It would get you from New York to San Diego in minutes. And thats just three orders of magnitude, or a 1000-fold difference - like going from meters to millimeters. Imagine how long it would take you if you increased your speed by a billionth-fold! Now take that intuition and work backwards: Think of a meter, which is just under a yard, and try to imagine shrinking down by a billion times.

The goal of nanotechnology is to engineer functional properties at these extremely small scales - properties that are not present in the constituent molecular building blocks that make up the nanotechnology itself. An important distinguishing characteristic about nanotechnologies is that they can be defined on the basis of functional engineered properties rather than the chemistry or physics that enable those properties. Although this may seem rather nuanced, its this functional, or engineering, definition that makes nanotechnology distinct from the natural sciences.

As such, nanotechnology in a way is not a new area of science per se, but rather the interdisciplinary convergence of basic fields (such as chemistry, physics, mathematics and biology) and applied fields (such as materials science and the various other areas of engineering). Within this framework, nanotechnology can be regarded as an interdisciplinary pursuit that involves the design, synthesis and characterization of nanomaterials and devices that have engineered properties at nanoscales.

Like other applications of nanotechnology to biology and medicine, in general, nanotechnology and nanoengineering research targeting the brain and neuroscience are focused on two general types of approaches: platform nanotechnologies that can be adapted and used to do experiments that answer a wide range of neuroscience questions; and tailored nanotechnologies that are specifically designed to address a specific problem or challenge.

Platform nanotechnologies are materials or devices with unique engineered physical and chemical properties that can potentially have wide-ranging applications in different areas of neuroscience. Tailored nanotechnologies begin with a well-defined biological or clinical question, and are developed to specifically address that issue. Much effort has gone into the development of new nanomaterials capable of serving as building blocks for such applications, for example.

Owing to the inherent complexity of biological systems in general, and the nervous system in particular, the tailored approach often results in highly specialized technologies that are designed to interact with their target systems - such as a specific cell type in a particular type of the brain - in sophisticated and well-defined ways, and so are better suited to tackle the particular problem than a generic platform technology. However, because tailored nanotechnologies are highly specialized, their broader application to other parts of the brain or other problems can be limited, or may require further development before they can be used.

Clinically, applications of nanotechnology to neurological disorders have the potential to significantly contribute to novel approaches for treating traumatic and degenerative disorders, as well as cancers, that may be clinically difficult to manage. The clinical challenges imposed by the brain and nervous system and the obstacles faced by anything designed to target and interface with it them are, to a large degree, a result of the unique anatomy and physiology. In particular, the brain is computationally and physiologically very complex, and has a highly restricted anatomical access.

Consider, for example, whats asked of a typical drug developed to treat some neurological disorder. The drug is first delivered systemically, say taken orally, or injected into the blood stream. It needs to reach the bloodbrain barrier, a functionally protective barrier that covers the brain, while producing minimal systemic side effects along the way. It then needs to successfully cross the bloodbrain barrier with minimal disruption to the barrier so as not to affect the brains normal physiology - or make an existing neurological condition worse. Once beyond the barrier, it needs to selectively target its intended cells, for example a particular subtype of neuron in a specific part of the brain. Only then can it carry out its primary active clinical function, whatever that might be. It could be modifying the action of an enzyme, producing a new protein, or blocking or augmenting a particular class of cell receptor. But it cant do that if it cant reach its intended cells safely, in enough quantities, and without causing negative side effects along the way. It is difficult for any single drug to accomplish all of this on its own.

But if you pair a drug with a nanoengineered molecular carrier, for example, together they become well suited to addressing these challenges, because they can be designed to perform multiple functions in a coordinated way. Within this framework of a nanoengineered carrier, the drug that performs the primary therapeutic function becomes one element of the system - just one part of the equation, with other parts of the nanoengineered carrier designed for the other list of requirements discussed above that need to occur in order to get the drug to its target cells. For example, biomimetic strategies incorporated into the design of nanoparticles can enable efficient delivery of drugs to the brain.

In fact, the prevalence of nanotechnology to neuroscience has been so significant over the last number of years that there are now large organized research efforts where the role and contribution of nanotechnology and nanoengineering isnt a novelty, but rather, a critical implied component of the effort. The Brain Research Through Advancing Innovative Neurotechnologies (BRAIN) initiative, launched at the White House in 2013, aims to revolutionize how scientists measure, study, and interface with the brain. Most of the focus to date has been on the development of ground-breaking neurotechnologies capable of performing experiments and measurements on the brain that exceed any technological capabilities that have come before them. From an engineering perspective, many, if not most, of the neurotechnologies that have emerged from the BRAIN initiative involve some aspect of engineering and technology development at the nanoscale. Nanoengineering methods and approaches are the technical enablers of the neurotechnologies that have emerged from this initiative.

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What Is Nanotechnology And How Is It Impacting Neuroscience? - Forbes

Could Nanotechnology Help to End the Fight Against COVID-19? | IJN – Dove Medical Press

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Introduction

The end of 2019 came with a serious viral infectious disease which was seen primarily from China, but spread worldwide and was declared as a pandemic in a few months. The outbreak officially became a pandemic in March 2020.1,2 The World Health Organization (WHO) termed this novel and vastly spreading disease as coronavirus disease-2019 (COVID-19), and the viral agent as severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2). Since then, it has been a massively challenging global epidemic with combined health-related and economic destitution worldwide.3,4 SARS-CoV-2 seriously affects the respiratory system by triggering an acute immunological response which is the main cause of death with a fatality rate per country of 0.0519.4%. The SARS-CoV-2 results in an increased mucous secretion, which then clogs the alveoli and prevents blood oxygenation. Its endocytosis and replication in the lungs generates an acute immune response and tissue inflammation by triggering the signal cascade through cytokine storms. The virus can also spread to the digestive system and other major organs like the kidney and liver. It has the potential to access every tissue that expresses angiotensin-converting enzyme-2 (ACE2) receptor.57 Structural analyses of SARS-CoV-2 showed that it has spike (S), envelope (E), membrane (M), and nucleocapsid (N) proteins which are responsible for its cell attachment and entry mechanisms. Management strategies are based on these structural features. More than 80% of SARS-CoV-2 and host cell membrane interactions occur due to the presence of the S protein that is a special characteristic of the pathogenic cell for treatment strategies.8,9 Human coronaviruses (HCoVs) are among the top 10 fatal viruses. SARS-CoV, one of the HCoVs, has a mortality rate of up to 10%. Currently, there are approximately 176 million confirmed cases and about 3,811,561 SARS-CoV-2 related deaths worldwide.10

Fever (85.6%), cough (68.7%), and fatigue (39.4%) are among the major reported symptoms. Dyspnea, headache, loss of appetite, loss of taste and smell, panting, sore throat, vomiting, diarrhea, rhinorrhea, and abdominal pain are the less common symptoms of the disease. The presence of comorbidities such as hypertension, diabetes, and coronary heart disease may further complicate the problem.11 There may be a two-week incubation period with mild to moderate symptoms followed by a high infection rate. Reports showed that there are also asymptomatic transmissions. Currently, the viral outbreak has created a global crisis related to disastrous live losses and financial collapses.1,12

The two main ways of COVID-19 transmission are direct air-to-air transmission during sneezing, talking, and coughing; and direct contact with contaminated surface/object.13,14 Personal hygiene, personal protective equipment (PPE), sanitizers, and surface disinfectants such as ethanol (6271%), hydrogen peroxide (0.5%), and sodium hypochlorite (0.1%) are the main ways of prevention.1517 Moreover, vaccine and drug development is the most eye-catching option to completely fight COVID-19. There is a continuous global effort to explore and decode the exact genome structure, identify the way of infection and transmission, draw effective prevention and immunomodulation approaches, and develop the most effective therapeutics.18 However, accurate prevention, early detection, and effective treatment strategies are not yet outlined. There is no approved drug and a free access vaccine to counter its worldwide spread. The various claims on the therapeutic and vaccine development, under various clinical trial phases, did not reach the market yet.19 At present, the health care and clinical research approaches are being negatively impacted by the pandemic through restrictions in funding and mobility which necessitate innovative life-saving ideas and alternative funding sources.20

The laboratory diagnosis of this viral infection is based on the techniques like polymerase chain reaction (PCR) and sequencing (smears taken from the oral cavity and throat); computer tomography, which reveals ground-glass opacity in the lungs, indicating viral pneumonia; plain chest radiography which investigates inflammatory foci caused by the virus, fibrosis, and connective tissue occlusions in the lungs that may develop after the disease; ultrasound investigation of the lungs for the visualization of pulmonary and pleural conditions in patients with suspected COVID-19; immunoassays which reveal the substances of protein nature including viruses, and general and biochemical blood test detecting changes in blood parameters related to the infection.9 Three main steps for an effective management approach considering the interaction of the virus when invading the host cells: cell attachment and entry, replication and protein expression, then finally, assembly, maturation, and exocytosis.21 Based on this concept, there are four medical approaches: vaccination, cell entry (cell cycle) inhibition, immune response modulation, and prophylactic treatment.22

There are two major drug therapy strategies against the virus: drug repurposing and novel drug discovery. Drug repurposing is trying to combat the pandemic with primarily discovered drugs for other known therapeutic purposes. This is a feasible strategy since it shortens the drug discovery time. In this regard, lividomycin, quisinostat, spirofylline, burixafor, pemetrexed, edotecarin, diniprofylline, fluprofylline, chloroquine (CQ), hydroxychloroquine (HCQ), remdesivir, tocilizumab, lopinavir/ritonavir, ivermectin, and azithromicin demonstrated potential anti-COVID effects. In addition, combined zinc supplements with CQ, drugs like silibinin and doxepin, and some glucocorticoids (betamethasone, dexamethasone, hydrocortisone, fludrocortisone, ciclesonide, and triamcinolone) showed promising effects.2325 Figure 1 demonstrates their mechanism of action and interaction at different stages of the viral cell cycle.26 Repurposed drugs have previously established safety profiles which facilitate their clinical transition, and result in less risky and more rapid applications. Different insilico tools can be combined with large drug databases for selecting possible candidates from the available pharmaceutical and pharmacological substances.27,28 Molecular dynamics simulations of HCQ and azithromycin dual therapy demonstrated a promising effectiveness with different potential mechanisms of action against the open and closed viral protein forms.2931 HCQ-azithromycin combination approach showed a better clinical outcome in terms of mortality rates among elderly patients, intensive care unit transfers, length of hospital stay, and duration of viral shedding.30 A systematic review, meta-analysis, and trial sequential analysis of ivermectin indicated that, using ivermectin for the prevention and treatment of COVID-19 is an equitable, acceptable, and feasible approach. The study strongly suggested that thehealth professional should consider its use both in therapeutic and prophylaxis approaches.32 Remdesivir, lopinavir/ritonavir, lopinavir/ritonavir with interferon beta-1 and CQ or HCQ are being assessed in clinical trials. However, these are associated with statistically insignificant clinical outcomes, complicated mortality/morbidity data reports, and unconfirmed clinical effects which prohibited the trustful use of those drugs.33,34 In contrast, the new drug discovery approach is more complicated and time-consuming. However, it has the highest potential to find new pharmaceuticals which have unique advantageous properties for unique viral pandemic events.25

Figure 1 COVID-19 entry point and possible target point of repurposed drug. Copied from Ahmad MZ, Ahmad J, Aslam M, Khan MA, Alasmary MY, Abdel-WAHAB BA. Repurpuse drugs against COVID-19: nanomedicine aas an approach for finding new hope in old medicines. Nano Express. 2021;2:022007. doi:10.1088/2632-959X/abffed.26

Biomaterials can endorse the fight against COVID-19 by enhancing immunomodulation and anti-inflammatory effects. Monoclonal antibodies can cross-react with SARS-CoV-2, block the viral attachment by disrupting the receptor-binding interface, and inactivate the virus by binding to S proteins.35,36 Tocilizumab (monoclonal antibody against interleukin (IL)-6), sarilumab (IL-6 receptor antagonist), HCQ, and CQ (blockers of pro-inflammatory cytokines) can be used as immunomodulators to counteract the systemic hyperinflammation.3739 Biologicals are the foremost approaches in COVID-19 management. Convalescent plasma therapy (CPT) can neutralize SARS-CoV-2 in newly infected patients.40 Different inactivated and recombinant vaccines are now being developed from viral DNA fragments and they are being evaluated in different phases of many clinical trials.41

Scientists are still searching for the most appropriate, efficient, and effective diagnostic, therapeutic, and preventive strategies, including the use of new nano-based technologies. Nanotechnology-based research and development now appears to be essential to end the pandemic effectively and shortly.34 Nano-based detection with nanowire biosensor chips, graphene derivatives, and other types of nanostructures have been developed.9 Nano-based systems are effective for inhibiting pathogens and minimizing drug resistance profiles.42 Carbon nanotubes that demonstrated a noble nanocarrier property and enhanced drug release towards target cells in cancer therapy can be potential therapeutic alternatives against SARS-COV-2.43,44 Currently, many pharmaceutical research and manufacturing companies are turning to the use of nanotechnology for vaccine and drug development. Nanoparticles (NPs) are being increasingly investigated and used as new anti-SARS-CoV agents, vaccine carriers or adjuvants, and nanoscale biorecognition elements with a promising indication of nanomedicine as a potentially suitable option to end the fight against this pandemic.34,45

Nanostructured material is a type of material with at least one nanometric dimension (usually less than 100 nm). They can be organic, inorganic, biomaterial-based, and carbon-based46 as shown in Figure 2. Their physicochemical properties such as, chemical reactivity, size-dependent transport, biocompatibility, and reduced toxicity attracted scientists in many fields. Medicine is one such fields with rising attention in applying nanotechnology.42 Nanostructure-based delivery systems demonstrated improved specificity and bioavailability over the traditional system. Much of the added value is related to NP physicochemical properties which include controllable size, great surface area to mass ratio, and easily functionalizable structure. They can stabilize the drug in the systemic circulation for targeted, controlled, and sustained delivery, which, as a result, can increase the therapeutic advantage.47 Multiple targeting, in vivo imaging, and combined drug delivery are also their potential advantages.48 All these principles can be applied to fighting the COVID-19 pandemic.

Figure 2 Different nanomaterials used against COVID-19.

As the pandemic continues to cause an enormous global crisis, there is still an unmet need to discern a favorable, safe, and typically effective approach for diagnosis, treatment, vaccination, and prevention to prohibit super-spreading of the virus and a mortality crisis.49 Diverse nanotechnological strategies have shown a promising capacity to address many of those unmet needs in the fight against the pandemic as stated in the next sections.

COVID-19 exposed the world for too many discrepancies including an absence of effective vaccines and therapeutics, lack of rapid or real-time detection methods, shortage of protective equipment, and limitation in accessibility of support for infected patients. These biosafety problems arise mainly from limited research and considerations in materials science. A variety of nanostructured materials, such as polymers, inorganic-organic frameworks, biomaterials, graphene derivatives, and carbon nanotubes are radically transforming the way of countering biosafety challenges.50

Time-consuming detection processes like quantitative real-time PCR can be eradicated by applying NP-mediated sensing alternatives which can provide a rapid diagnosis.51 Limitations in antibody tests like technical production and identification problems, lack of suitability, and false positive or negative findings are reported from the conventional tests. Early stage detection, no or minimized contamination, and protected risk of error are also questions to be answered with more appropriate advances of testing.52

Recently, the application of NPs has emerged as groundbreaking in the medical field that allows accurate diagnosis and specific treatment of a disease at once (theranostic approach). Nanotheranostics involve virus detection and simultaneous neutralization by using nanodrugs that target diagnostics and therapy.53 This approach helps to fill the existing gap between diagnostics and therapy. It has been widely demonstrated in cancer chemotherapeutic investigations and there have been substantial struggles to extend this advantage to other areas of medicine including infectious diseases.54

Even though drug repurposing is a time-saving approach, the benefits of the repurposed drugs could not be fully supported with clinical outcomes and respective authorities. Unsatisfactory results from CQ and CQ, hepatotoxicity of remdesivir, unestablished harm or benefits of ACEIs, challenging safety/efficacy issues from the nonspecific mechanism of CPT, and safety concerns on corticosteroid use were reported. Application of nanostructures to the repurposed drugs can help develop efficient therapeutic strategies with minimal safety/efficacy concerns.52

SARS-CoV-2 mainly affects the respiratory tract, especially the lungs, with expanded effects on other organs such as the gut, kidney, and vasculatures.55 Therefore, the lungs are the most important organ for COVID-19 drug delivery. Targeting such sites and controlling drug release at target organs with conventional approaches is very difficult. Advances in inhalable NPs overwhelm such disadvantages, such as side effects from high serum drug concentrations and target inaccessibility. Nanotechnology-based intranasal drug delivery systems can overcome various limitations of mucosal administration.34 More accurate and controlled crossing of the bloodbrain barrier (BBB) can be achieved with nanobiomaterials that can improve cell retention, survival, differentiation, and integration inside the CNS.56 Nanodelivery through the nasal cavity is not only simple and inexpensive, but also noninvasive and rapidly absorptive.57 In addition, biocompatible nanomaterials such as boron nitride oxide nanosheets can improve the adsorption of drugs towards different parts of the viral protein; help the drug diffuse rapidly to the viral protein, and improve drugvirus interaction.31

Conventional vaccines have limited efficacy against novel pathogens due to their low blood stability as well as short and insufficient immune response that drives the need for higher doses.58 In addition, they are associated with short half-life, poor immunogenicity, non-targeting, slow absorption, and high storage and delivery requirements. Nanobiomaterials can be used as adjuvants for vaccines with special characteristics of reduced systemic toxicity and better targeting.59 There are also associated challenging issues, such as high pathogenic variety, high viral mutation rate, and complex host-related failures, resulting in an inappropriate immune response.52 Nanovaccinology comes with an effective alternative that results in strong immunostimulatory effects, manageable size and surface properties, controllable drug release, and strong stimulation of humoral and cellular responses.60

Disinfecting all surfaces and objects all the time is practically impossible, and one cannot be sure that the surface/object will not be contaminated again. Surface coating with nanomaterials that can inactivate the viral cell can be an advantageous advance for designing contamination-free equipment. Self-disinfecting surfaces can be prepared using nanomaterials with intrinsic antipathogenic effects.9,61 Surfaces with inherent virucidity, antimicrobial releasing self-sanitizing surfaces, and surface topologies with viral self-deactivation are some among the novel surface nanodisinfecting applications.62

As PPE plays the greatest role in combating the pandemic, it is equally essential to critically consider their sufficient supply, storage, waste management, and appropriate use.63 Actually, the current trend of applying the PPE could not eliminate the viral transmission as expected which necessitates a modification for their production and use.64 Environmental safety and waste management related to PPE is another complicated issue during the pandemic season as it becomes burdensome, resulting in a health compromising situation including carcinogenic health impacts. Therefore, it is recommended to use available alternative technologies for the production of biomedical equipment and treatment of COVID-19-related waste.65,66 Moreover, disposable PPE becomes one of the major factors in environmental pollution and source of biohazards creating critical environmental issues globally. If this remains unsolved, it may be a long-term threat to human and aquatic organisms.6769 This can be potential long-term physical, physiological, and pathophysiological effects.70 Nanostructures can improve PPE efficacy and safety by providing reusable, self-cleaning, high efficiency, and effective products with antimicrobial and antiviral properties. Intrinsic antiviral NPs, nanofibers and NP-coatings that can provide super-hydrophobicity, water-repelling, synergistic, and self-cleaning effects are some of the applicable nanostructures.71,72 Nanotechnology can generally convey advanced therapeutic, diagnostic, and prevention options than conventional as summarized in Table 1.

Table 1 Comparison Between the Conventional and Nanobased COVID-19 Management Approaches

Nanotechnology has huge potential for fighting the COVID-19 pandemic, since it enables targeted drug or vaccine delivery to physiologically inaccessible targets; increases drug loading and transport, and provides intrinsic/synergistic virucidal activity.73,74 It can also possess simple, fast, and cost-effective alternative disinfection methods; provide targeted pulmonary drug delivery, and offer ways for designing better immunomodulating materials. It can generally contribute to antimicrobial, anti-inflammatory, diagnostic, theranostic, therapeutic, biosensing, preventive/protective equipments, immunomodulation, and vaccination approaches against the pandemic.61,75 The different application of nanotechnology during the fight against the COVID-19 pandemic is summarized in Figure 3.76 NPs possess a comparable size and structure with the virus as they both act at the same nanoscale, that makes their use paramount and suitable for the development of vaccine and immune engineering. This also allows the NPs to bind, encapsulate and passivate the virus, permitting easily detection, treatment, and prevention.77,78 Generally, nanomaterials can induce an external stimulus that is responsible for killing the virus or directly interact with the virus with their surface properties to act as antiviral agents.25 Nanodiagnostics, surveillance and monitoring, nanotherapeutics, and nanovaccination can provide the next generation of fighting approaches against the outbreak.53,79

Figure 3 Potential nanotechnology applications for combating SARS-COV-2. Copied from Rai M, Bonde S, Yadav A, et al. Nanotechnology as a shield against COVID-19: Current advancement and limitations. Viruses. 2021;13:1224. doi: 10.3390/v13071224.76

Nanotechnology, in SARS-CoV-2 detection, can be applied in the form of nucleic acid testing (amplification of nucleic acid with NPs under isothermal conditions); point-of-care testing (POCT) (diagnose infected individuals, without the need of sending patient samples to laboratories via simple color changes after applying nanostructures); electrochemical sensors (high sensitivity and possibility of miniaturization with metallic NPs); chiral biosensors (NPs conjugated with coronavirus specific antibodies), etc.80,81

Since the infection is easily transmissible from human to human, the diagnostics should better be at POC without the need for experienced labor, complex time-taking procedures, and sophisticated laboratories.82 POCD provides a diagnostic outcome with improved laboratory quality in real-time, within minutes and not hours. Nanotechnology can further advance the POCD approach by adding nanoensor technology, microfluidic channel devices, bio-analytical platforms, assay formats, lab-on-a-chip technologies, and complementary advances.83 NPs can assist the immunochromatographic test (ICT), also known as lateral flow immunoassays (LFIA), for detecting the antigens or antibodies rapidly with a POC. The advantages of this system includes; detection of both symptomatic and asymptomatic patients, not requiring trained staff, triage of patients avoiding further spreading, diagnosis when laboratory facilities are unavailable, easy of use, small sample amount, and timely detection in less than 20 min.84,85

The principle of rapid diagnostic kits works by direct isolation of RNA from a patient sample. Metallic and magnetic NPs, such as gold and iron oxide NPs, have been widely investigated so far and demonstrated improved testing accuracy, specificity, time, and reliability.86,87 Gold NPs coupled to complementary DNA sequences demonstrated a color change from red to blue indicating the formation of a tertiary complex with the viral antigen after the immobilization and agglomeration of the NPs.88 Metal oxide NPs in complement with a silicon-on-insulator nanowire sensor showed a rapid and very sensitive SARS-CoV-2 antibody detection in 515 min. Magnetic NPs (MNPs), especially iron oxide NPs, can easily separate the viral RNA from sample solution with their high magnetic efficiency to prepare analyte preconcentration, signal amplification, and biosensing.8,89 Silica-coated super-paramagnetic NPs improved the selectivity of the detection during PCR-based assays by forming magnetic-conjugated DNA complexes, which then can be magnetically separated and amplified through PCR.90 Field-effect transistors based on graphene demonstrated the most rapid SARS-CoV-2 detection in less than a minute.91,92 The precision of PCR can also be enhanced by using graphene NPs.93

NP-based biosensors can minimize the conventional time-consuming steps, like in the case of quantitative real-time PCR, and provide pronounced advances in rapid diagnosis.51 The SARS-CoV-2 biosensor using thiol-modified antisense oligonucleotide-capped glyconanoparticles can diagnose positive COVID-19 cases visible with the naked eye through color change within 10 min.84 The glyconanoparticle platform with a lateral flow diagnostic device demonstrated a low-cost and rapid detection in less than 30 min.94 Nanobiosensors integrated with bio-informatics can provide individualized approaches by correlating infection progression with sociodemographic parameters like race, gender, age, and region that can further optimize targeted testing, tracing of asymptomatic patients (carries), and detection of discharged patients for re-infection.95 Different nanostructured biosensor applications are presented in Figure 4.96

Figure 4 Application of biorecognition elements of a biosensor to develop a sensing platform against SARS-CoV-2. Copied from Gupta R, Sagar P, Priyadarshi N, et al. Nanotechnlogy-based approaches for the detection of SARS-CoV-2. Front. Nanotechnol. 2020;2:589832. doi: 10.3389/fnano.2020.589832.96

Abbreviations: FRET, Frster resonance energy transfer; GO, graphene oxide; SERS, surface-enhanced Raman spectroscopy; QD, quantum dot.

Nanopapers and nanochannels are nanomaterial-based sensors that advance the lateral-flow devices to detect at observation level with smartphones or the naked eye. They offer cost-efficient options for viral detection. Battery-operated and smartphone camera-based amplifications with inorganic quantum dots are coming to be the next generations for SARS-CoV-2 detection.97 Smartphone-based sensing systems are semi-automated, personally accessible, user-friendly, and applicable with less training. The sensing system is connected to the smartphones; NPs are employed peripherally; analysis is conducted by the sensing system, and finally, the smartphone itself will interpret the results. It is individualized and takes less time than PCR.98 Some examples of nanomaterials investigated for diagnosis of COVID-19 are listed in Table 2.

Table 2 Some Nanobased Novel Diagnostic Tools for COVID-19 Detection

In recent times, nanostructured systems have brought a groundbreaking advance in medicine, in which accurate detection and specific therapeutics of disease conditions can be conducted at once (theranostic approach). Theranostics can provide detection and neutralize the viruses using NP-based approaches which will possess a great prospective in controlling the COVID-19 pandemic as NPs can amplify the detection, inhibit viral replication, and disrupt all possible virushost interactions. Thus, nanotheranostics can fill the existing gap between diagnostics and therapy.53,54 Nanotheranostics is a new field in medicine that combines NP-based targeted therapy based on diagnostic tools to efficiently and selectively deliver drugs, vaccines, and biologicals to the target sites of infection. It has the ability to monitor infectious sides, deliver treatments, and assess therapeutic responses with noninvasive imaging approaches.105,106

Several approaches are being investigated for smart nanotheranostic application by combining bioactive targeting and nanodiagnostics to deliver therapeutics with concomitant real-time response monitoring; minimized probability of over- or under-dosing, and noninvasive imaging techniques. Nuclear imaging with radiolabeled nanomaterials, inorganic NPs, organic NPs like polymers, carbon-based nanomaterials, and vesicular nanostructures like nanosomes, are some of the multifunctional nanotheranostics.107 The application of quantum dots in fluorescence imaging technology enables in vivo visualization of individual cellular behaviors, and simultaneous treatment according to the observed behavior at the same time.108 Nanorobots can outline a roadmap for nanotheranostics against a variety of diseases including the recent pandemic. Artificial intelligence can help this advance with multivariate data analysis regarding the disease pathophysiology and design of its more efficient therapeutics. Patient-specific models and nucleic acid-based nanorobots with more advanced nanoplatforms and multivalent nanostructures are being considered as promising theranostics against the pandemic.50

Therapeutic nanostructures can block viral entry, inhibit its replication, deliver drugs as nanocarriers into the target organ, and assist vaccine formulation and delivery as summarized in Figure 5. In general, they target the SARS-CoV-2 entry and life-cycle with a special emphasis on the S protein as it is the most important factor for viral entry and host cell interactions.45,80 Nanomodification of repurposed drugs like dexamethasone and CQ demonstrated promising anti-edema, antifibrotic, and anti-inflammatory mechanism predicting NP-uptake in cells.109,110 Nanostructure-based drug delivery can be either passive (drugs loaded and transported with nanocarriers) or active self-delivery (drug molecules themselves are nanosized).111 Since SARS-CoV-2 initiates its infection on the nasal cavity, nasal cavity-based nanodelivery is very important and promising for targeted COVID-19 management with simple, inexpensive, noninvasive, and rapidly absorbable approach.57 These systems are believed to improve therapeutic efficacy without compromising safety. Several nanodeliveries with enhanced antiviral activities against SARS-CoV-2 have been investigated, reported, and it is claimed that they can synergize the global fight against the pandemic.112 Some examples from these investigations are described in Table 3.

Table 3 Potential Nanobased Formulations for COVID-19 Treatment

Figure 5 Summary of cellular parts of SARS-CoV-2, their functions and interactions with nanodelivery management mechanisms.

Organic NPs such as liposomes, dendrimers, micelles, and polymers can have nanovirucidal effects and inactivate viral cells including SARS-CoV-2. They can be formed in combination with each other or with inorganic NPs to form hybrid nanosystems based on specific use at the targeted site.74 Inhalable organic and inorganic NPs (Figure 6)121 can be used for targeting the lung to overcome side effects from high serum concentrations of conventional administrations.122 Nano-drug co-deliveries can reduce particle size-dependent safety issues in lung and respiratory systems.123 Corticosteroid-loaded PLGA NPs, solid lipid NPs, N,N-dimethylaminoethyl methacrylate, and butyl methacrylate monomers can be used for effective and safe pulmonary delivery to prevent systemic immunosuppression effects of the drugs.124 Inorganic NPs like transition metal NPs (Ag, Cu, Zn), metal oxides (Fe2O3, TiO2, ZnO2,), and carbon-based NPs have intrinsic antipathogenic effects by interfering one or more viral life-cycle stages.125 Mesoporous silica NPs provide drug co-delivery which can further be functionalized with ligands for active targeting of the viral cell.8 AgNPs are better drug carriers for nucleic acid-based delivery with increased stability, protection from degradation, and controlled intracellular delivery.126 AuNPs, carbon-based NPs, polymeric NPs, and vesicular nanocarriers have the potential to induce cytokine and antibody responses which are dependent on their size, shape, and surface chemistry. By modifying these properties with respect to different targeting moieties, they can be promising strategies for targeted antigen delivery.127,128

Figure 6 Intranasal nanodelivery for treating SARS-CoV2 infection. Copied from Nair SC, Joseph SK, Arya MK, Thomas S. State-of-the art nanotechnology-based drug delivery strategies to combat COVID-19. Int J App Pharm. 2021;13(3):18-29. doi: 10.22159/ijap.2021.v13i3.40865.121

Biomaterials are substances that are either formed by living organisms or extremely compatible by their nature. Novel biomaterials at their nanoscale level possess precise and effective drug delivery functions.129,130 Biomaterials are reported for reducing mortality in COVID-19 patients. Investigations are being made with remarkable efforts to apply them in controlled delivery, for minimizing systemic administration complications, and alleviating disease severity.131 Bioengineered platforms of airway models are used to elucidate the pathophysiological processes of COVID-19 which is a rate-limiting step for management procedures and recommendations.132 Their biologic and physicochemical properties can be operated as to the different needs for therapeutic applications including the current pandemic.133 Tissue engineering and regenerative medicine are now providing promising solutions to viral outbreaks in diagnostics, treatment, vaccination, and surface disinfection which can be implied for their application toward COVID-19.134 Organoids (clusters of organ-specific cells) were formed as effective models for COVID-19 viral examination. In addition, microfluidic organ-on-chip (OoC) systems have recapitulated host physiology, viral pathology, and therapeutic responses with high accuracy.135,136

Biomaterials have the potential to modulate the immune response, advance drug repurposing, and prevent or treat complications of COVID-19.137,138 Moreover, the nano-forms of biomaterials can improve quality of life by reducing the adverse effects of conventional therapeutics. Therefore, highly efficient, reliable, compatible, and recyclable biomaterial-based applications can support the fight against the current pandemic.46 Nanobiomaterial therapeutics can be used to deliver cargo directly to the respiratory targets (lungs) to avoid nontarget effects as they can be synthesized according to the ideal size range and controllable release for cellular targeting.139 Furthermore, many nanobiomaterials have intrinsic low cytotoxicity and high biocompatibility which are the currently needed essential attributes for COVID-19 management. Nanobiomaterials in conjugation with Ag and mesoporous silica NPs could be used for the delivery of anti-inflammatory cytokines to counter the inflammation associated with COVID-19.138

Nanobiomaterial forms, such as gum-based hydrogels, nanogels, multilayered polyelectrolyte films, DNA aptamers, and nanocarriers like nanocapsules, nanospheres, and polymers demonstrated a potential effect that can add to the fight against COVID-19.22,126 Biomaterials in the form of nanoemulsions, nanodecoys, virus-like NPs (VLNPs) and self-assembly systems are being investigated and suggested for use against COVID-19. Nanoemulsions can easily transcytose lipophilic antigens across the intestinal cells. In addition, they can be synthesized with low cost and easy procedures; require easy storage conditions; demonstrate increased absorption rate and bioavailability; possess thermodynamic stability; provide solubility of lyophilic drugs, and improve the antiviral activity of the drug.140 Nanodecoys are cell membrane nanovesicles formulated to display high levels of ACE2 and cytokine receptors with the aim of competing for viral and cytokine binding. They can significantly inhibit SARS-CoV-2 replication and neutralize inflammatory cytokines.141 VLNPs are sphere-shaped NPs formed from several nanosized molecules and the self-assembly of viral proteins. They do not have genetic material content but structurally mimic the real virus enabling them to highly attract antigen-presenting cells and stimulate the immune response.105 Self-assembling NPs are excellent in carrying the drug, easily crossing the cell membranes, releasing drugs in a controllable manner at the target site, and synergistically activating the immune system.121

Nanobodies are other types of nanobiomaterials that can identify the pathogens, envelop the virus, and neutralize its functions. Hence, they can be diagnostic or therapeutic tools against the SARS-CoV-2 virus.79 Researchers have isolated high stability nanobodies that can bind to spike protein of SARS-CoV-2, detect at an atomic level, and block the virus very specifically.142 The worlds first humanized antibody against the SARS-CoV-2 inflammatory storm was discovered which can specifically damage the viral critical stage in the lungs. With little modification by using drug-loaded NPs, it can provide easy access for air sacs and blood vessels for free delivery of oxygen and blood.143 Cellular nanosponges made of the human plasma membrane epithelial type II cells or macrophages are reported as an effective countermeasure to SARS-CoV-2 since they display the same protein receptors required by SARS-CoV-2 for cellular entry. Therefore, they will neutralize and mutate SARS-CoV-2 making it unable to infect.117,136

Nanofibrous hybrids are active antiviral and antibacterial membranes that are formed embedded with AgNPs by an electrospinning process. They have subsequent screening with potential antiviral activities against different viruses, including SARS-Cov-2. They can also be applied in PPE and surface disinfection developments.144 Eco-friendly nonspherical nanocellulose nanofiber is synthesized which is a sustainable, nontoxic, low-cost, and biocompatible carrier with antimicrobial effects.145 Antibodies conjugated to biomaterial-based NP surfaces allow efficient and effective inflammatory marker removal caused by the cytokine storm. Chitosan, hyaluronic acid, PLGA, and mesoporous silica NPs can be used for surface conjugation to reduce the burden of SARS-CoV-2 cytokine storms. Ligand-based nanoparticulate biomaterials possess sequestration of cytokines and active-targeting for viral inactivation. The immune modulation effect of these systems can be assisted by co-delivery of anti-inflammatory drugs.138

Nano-sized herbal medicines have been developed as nanophytomedicines based on their unique nature. Various nanotechnology-based systems such as polymeric NPs, solid lipid NPs, magnetic NPs, metal and inorganic NPs, nanospheres, nanocapsules, quantum dots, nanoemulsions, polymeric micelles, liposomes, and dendrimers have been tried for the successful delivery of natural products from traditional medicine. This brings potential herbal drug-loaded pharmaceutical carriers for alternative and complementary medicine to the modern system which can push the fight against many chronic and pandemic global issues like COVID-19 one step forward.146,147 Since the occurrence of COVID-19, diverse traditional medicines have been used alone or in combination with the conventional management systems. These herbal extracts may possess anti-SARS-CoV-2 actions by disrupting the viral life-cycle that can be a promising preventive and therapeutic alternative to the pandemic.148 In addition, their favorable oral stability and ease of scaling up make them ideal contenders for prophylactic and prevention strategies including vaccine development.149 Reports indicated that Chinese, Indonesian, and Nepalese people increased the use of medicinal plants during the COVID-19 pandemic claiming that they can prevent or cure the disease and it is believed to have shown good results in fighting SARS-CoV-2 empirically.45,150152 Adeleye et al, identified 15 potential ethnomedicinal herbs from different African countries for the discovery and development of therapeutic agents for COVID-19 applications.153 Phytotherapeutics has been recognized for its better therapeutics with fewer adverse effects than modern medicines. However, it needs a novel scientific approach for modified, sustained, and controlled delivery to enhance patient compliance and avoid repeated administrations. This can be achieved by designing nanostructured delivery systems and integrating them with nanocarrier approaches that can enhance its therapeutic activity while overcoming associated problems, such as bulk dosing and lower bioavailability.144

The sole combination between traditional medicine and nanomedicine will accompany a new era of affordable, safe, and effective medicinal systems that can be very supportive for a pandemic crisis like COVID-19.154 Plant metabolites and body parts of microorganisms can be delivered by spherical NPs as a potential strategy for antiviral therapies.145 Glycyrrhizic acid, a common ingredient in the Chinese herb licorice, has a known anti-SARS-CoV effect, but its application is limited due to cytotoxicity, poor water and bio-fluid solubility, and low bioavailability. Synthesizing highly biocompatible glycyrrhizic acid NPs demonstrated a significantly enhanced antiviral and anti-inflammatory effects in vitro and in vivo.152 A typical Indonesian natural product administration culture, called jamu, is commonly practiced to relieve pain and inflammation from acute and chronic disorders. The efficacy and the value of jamu have been improved using various nanotechnology approaches such as nanosuspension, nanoemulsion, nanoencapsulation, and nanofiber fabrication.151 Researchers at Alfaisal University combined AgNPs with a black tea extract (theaflavin) and attained a potent viral replication inhibition effect that can assist in the fight against COVID-19 by slowing the viral reproduction rate in a host and reducing the severity of symptoms.155

Nanostructures can also be used in the prevention of major organ complications, co-infections and postrecovery syndromes of COVID-19 infected patients. Antiviral nanobiomaterials, in the form of external vesicles, exosomes and artificial nerve conduits can cross the BBB; promote synaptic plasticity; modulate immunity for poststroke pain and inflammation; facilitate neural regeneration, and treat neuropathies associated with COVID-19.56 Nanotargeting of cytokine receptors using lipid nanoemulsions demonstrated a promising application for minimizing dementia and brain inflammatory neurodegeneration which is a risk factor for Alzheimers disease.156,157 The alarming rate of antimicrobial resistance with the upsetting emergence of new pathogens like SARS-CoV-2 will challenge the therapeutic approaches to many infectious diseases, which as a result, demand an accurate, fast, sensitive, specific, simple, and inexpensive diagnostics and therapeutics strategy.158 Ag, Au, iron oxide, and titanium dioxide can be valuable NPs to combat secondary microbial infections and multidrug resistance in critically ill patients during COVID-19 infection which is known as a silent risk.42,159 Furthermore, nanotechnology can help to address COVID-19-associated pneumonia by delivering anti-inflammatory nanodrugs and nano-antioxidants; providing inhalation methods; and utilizing oxygen-generation nanomaterials.160 Niclosamide-loaded albumin NPs, chitosan nanocarriers, biopolymer-derived nanocarriers, and lipid NPs demonstrated a highly viral entry inhibitory effect against SARS-CoV-2 in vitro and showed an extended circulating drug exposure in vivo, with a new, cheap, and scalable preparation process.161 In sum, all these nanotherapeutic strategies can provide timely solutions for combating the pandemic and open the door for future explorations.

Vaccines appear to be the preeminent solution in combating the pandemic even though their development, clinical trial processing, approval, and scale-up are time-consuming. But, investigations are being undertaken as quickly as possible. SARS-CoV-2 vaccine development is an the most astonishing one in history by getting into clinical trial phases within only three-to-six months which makes it the fastest of all the epidemics and pandemics.162 The application of nanomaterials in vaccine development and delivery has led to the birth of the concept of nanovaccinology. NP-based vaccines with organic, inorganic, hollow polymeric, and biologic NPs possess potential benefits such as high payloads, tailorable size and surface properties, controllable and targeted release kinetics, improved stability, easy antigen uptake, and strong response induction.60,163 Nanobiomaterials can be vaccine adjuvants to enhance vaccine efficacy due to their lower systemic toxicity, stronger targeting, higher specific surface area, and lower immune titer.58,59

Subunit vaccines with NPs, such as virus-like proteins (VLPs) and protein NPs, are under active consideration in development processing. The receptor-binding domain (RBD)-based SARS-CoV vaccines are also considered as effective strategies.164 VLNPs are desirable NPs that stand out to cells that produce antigens; easily detect them, and stimulate an immune response.121 They can better be delivered through the lymph and capillaries, easily entering into the cell; reducing the systemic inflammatory response; increasing vaccine immunogenicity and efficacy; improving patient safety; and boosting the immune system.165,166 Nucleic acid-based vaccines demonstrated an enhanced delivery efficacy and stability when they are applied with cationic liposomes, dendrimers, and solid lipid NPs.167 Vaccines formulated with exosomal S protein of SARS-CoV resulted in induced and accelerated antibody neutralizing effect.168

NP-based inhalational vaccines provide high mucosal immunity in the lungs which are the main targets in respiratory infections like SARS-CoV-2.138 Intranasal vaccine delivery offers admirable safety, better convenience, both systemic and local immune response for controlling respiratory infections like SARS-CoV-2.169 PLGA NPs functionalized with ACE2 receptor proteins from alveolar epithelial cells and macrophages can neutralize viral infectivity.117 Extracellular vesicles containing ACE2 as decoys and ACE2 mRNA packaged with lipid NPs achieved a critical host mimicry to distract the host-binding ability of SARS-CoV-2.170,171 Silica NPs coupled with polyethyleneimine showed easy trapping, protection, and delivery of DNA/RNA antigens into cells with potential adjuvant effect, great loading capacity, robust bonding, and enhanced cellular uptake.136 Quantum dots (QDs), with much smaller sizes than the known NPs, have also shown a promising utilization for COVID-19 vaccine designing.172 Lipid-based NPs (LNPs) opened the way forward to COVID-19 and they are now considered as the frontrunner in nanoscale vaccine development and delivery. They promised for the potential success of mRNA-LNP vaccines and, therefore, a long journey of optimizing LNPs for nucleic acid-based delivery has been passed.173,174

NP-based vaccine development is now on the way in various pharmaceutical companies and research institutes.175177 Table 4 demonstrates some of the WHO-listed nanovaccines which are in clinical and preclinical phases.177

Table 4 Novel Nanostructured Vaccines for COVID-19 in Clinical and Preclinical Phases

Most NPs for use in nanovaccines are known to be biodegradable, biocompatible, and less toxic and, therefore, they can be safe and effective alternatives to the conventional vaccines. However, nanovaccine-related side effects and safety concerns still remain to be investigated.178 Severe allergy-like reactions were reported from Pfizer and BioNTech novel vaccine products which is proposed to be due to nanopackaging compounds of the messenger RNA (mRNA). Polyethylene glycol (PEG) in vaccines may occasionally trigger anaphylaxis that causes a potentially life-threatening reaction with complicated respiratory and cardiovascular disorders.179 LNPs in the Pfizer/BioNTech and Moderna vaccines human trials demonstrated inflammation-like side effects such as pain, fever, swelling, and sleepiness.180,181 Oxidative stress, genotoxicity, hypercytokinemia, injection site inflammation, distribution, and persistence are also linked with nanovaccine toxicology. These side effects are probably associated with the antigen-NP, NP-antigen presenting cell, NP-biosystem, and adjuvant-NP interactions. In the case of a pandemic crisis like the current one, risk is weighed against potential benefit for any new advance.182,183

Nanomaterials can ultimately improve the COVID-19 prevention approaches by enhancing the surface disinfection, sanitization, and protective equipment efficiency and effectiveness as demonstrated by some investigation reports in Table 5. The use of nanomaterials in the production of PPE brings them new and improved properties in terms of resistance, efficacy, comfort and safety as summarized in Figure 7.129 The principles for the application of nanotechnology in COVID-19 prevention strategies are presented in the sections below.

Table 5 Nanobased Protective Equipment for COVID-19 Prevention

Figure 7 Nanotechnology applications for production of PPE against COVID-19. Copied from Campos EVR, Pereira EAS, de Oliveira JJ, et al. How can nanotechnology help to combat COVID-19? Opportunities and current need. J Nanobiotechnol. 2020;18:125. doi: 10.1186/s12951-020-00685-4.129

Various chemical disinfectants are being applied widely in personal, household, and medical facilities for exhaustive sterilization during the pandemic. These include alcohols, phenol-based disinfectants, quaternary ammonium compounds, chlorine-releasing agents, iodophores, and high-level disinfectants like formaldehyde.190 However, it is practically impossible to sanitize surfaces all the time, and there is no guarantee for the surface not to be re-contaminated.9,191 Investigation is underway for smart surface coatings with inherent virucidal materials and self-disinfecting abilities by the application of nanostructured techniques to surface disinfectants.68,69 These techniques include addition of intrinsic antiviral NPs, polymerization with intrinsically pathogen-resistant nanomaterials, metallic surface coatings, and nanotexturing.192

Various metal and metal oxide NPs such as AuNPs, AgNPs, ZnONPs, CuONPs, SiONPs, nanosized copper (I) iodide NPs (CuINPs), and quaternary ammonium cations commonly (QUATs) are capable of inactivating virus from surfaces.9 Metallic NP-based disinfectants have interesting features in terms of fabrication process and cost, safety and toxicity, life-span, antiviral activity, eco-friendliness, nonirritating, and nonfoaming properties to protect the pandemic viral transmission.19 They can be synthesized using the green synthesis approach from natural resources such as plant parts, insects, and animals. They provide an adsorbent property by their larger effective surface area, and a controlled release of the disinfectant molecules.193,194 They can be used for coating surfaces to oxidize and release ions with antimicrobial properties for disinfection. Controlled and sustained ion diffusion from metals like Cu modulates antiviral characteristics of surfaces.195 In addition; they are dermatologically safe and excellent in keeping public places safer from COVID-19 risks.15 Surfaces can be coated by nanopolymers in different ways. First, with a simple drop-casting method, a polymer solution will be dropped to coat the surfaces and then allowed to evaporate. In the second method, a dip coating technique can be done by immersing a substrate in the polymer solution, with consequent withdrawing, evaporation and drying. In a cast-coating technique, the polymeric solution will be cast onto the surface followed by solvent evaporation.196

Surfactant-coated NPs provide special antistatic, stabilizing, antiviral coating properties for surface disinfection.108 Apart from coatings, NPs like AgNPs demonstrated antiviral effects including SARS-CoV-2 when applied in their nanopowder forms, which can also be applicable for face masks and air filters.197,198 Copper NPs had been proven for theirs antiviral effect against HCoVs by degrading and inactivating the viral genome which may be projected for use against the current pandemic, SARS-CoV-2.199 Recent studies also reported that CuNP-loaded surfaces can easily deactivate SARS-CoV-2 and be developed with less economy than AgNPs and with excellent stability.200,201 Furthermore, conjugation of CuNPs with quaternary ammonium structures exhibited enhanced antiviral activity.202 Replacing plastic and stainless steel materials with Cu alloy can limit COVID-19 spreading on surfaces.203 In another way, photothermal inactivation of SARS-CoV-2 from surfaces can be done by illuminating Ag and Au NPs and nanorods at an optimal wavelength to induce heating for viral inactivation.204 Encapsulating objects with photoactive nanomaterials and using electromagnetic radiation to disrupt SARS-CoV-2 cells are other methods for surface disinfection.205

A study done by Abo-zeid et al showed that iron oxide NPs, both Fe2O3 and Fe3O4, can interact with viral spike protein destroying its ability of host cell attachment. In addition, they produced reactive oxygen specious (ROS) that inactivates SARS-CoV-2 in surfaces.206 Titanium dioxide (TiO2) nanocoating is the other alternative for sanitizing public utilities and mass gathering areas. Due to its UV induced photocatalytic properties, it has an effective multidimensional application for decontaminating and minimizing the COVID-19 transmission. It is a convenient and cost-effect disinfecting approach, even for remote locations, through TiO2-doped paints, air filtration aerosolized filters, TiO2-impregnated ventilation systems, and Cu and Ag-loaded TiO2 nanowires. Surfaces coated with aluminum alloy NPs also demonstrated an effective SARS-CoV-2 disinfection within six hours.207,208

Physicochemical properties of graphene nanomaterials can be used to control the transmission of the COVID-19 pandemic by deactivating the virus from surfaces. Graphene and its derivatives inactivate the virus by exerting photothermal activities and binding to the viral S protein that results in inhibition of cellular interactions to the host cell receptors.25,209 Water treatment using nanostructures of light-activated, layered graphitic carbon nitride disables the contaminating ability of viruses including SARS-CoV-2.79 Nanostructured anionic polymers showed pH adjusted, rapid and continuous disinfecting ability which can be a good alternative to inactivate the virus in a self-disinfecting manner.210 In recent times, nanobased air ionizers and surface purifiers that can be applied for decontaminating buildings and public offices are being studied and developed.211 Polymers can be awarded an antimicrobial effectiveness by covalent conjugation of biocidal agents such as quaternary ammoniums, phosphonium groups, chlorine dioxide, alcohols, and sulfonates to produce permanently coated, nonleaching sterile surfaces.125 Ventilator units can also be coated with the same principles to reduce the likelihood of COVID-19 infection and cross-infections.19

PPE includes textile materials such as headgear, goggles, masks, gloves, facial protection, and dresses or gowns. They are critical elements for protection from COVID-19 transmission. Nanostructures used in PPE modification are responsible to adsorb viral particles for viral inactivation and filtration efficiency which is the main principle for their application of COVID-19 prevention.212 The main challenges encountered by conventional PPE are associated with their poor antitoxicity, difficulty in breathability, heat dissipation, and reusability.176 Uncertainties are also rising on which, how, and how much they permit COVID-19 transmitability, especially in workplace settings and densely populated gathering areas which necessitates more trustworthy, cost-effective, efficient, and reusable PPE development.213 Appropriate understanding of the role and the usage of PPE by the health staff and the public and ensuring an adequate supply system are considerable factors for imminent prevention of the pandemic. That is why their application worldwide has not been enough to stop the transmission.63,64

Environmental safety and waste management is another complicated issue during the pandemic season. It puts a substantial burden and results in a health compromising situation including carcinogenic health impacts questioning for other alternative technologies for the production of biomedical equipments and treatment of COVID-19 related wastes.65,66 Moreover, single-use PPE types become factors in environmental pollution and sources of biohazards. Not only the discarded PPEs, but also their derived decomposition products are threatening the aquatic organisms and human life that may persist for many years in the future.6769 Hasan et al revealed the potential long-term effects of these environmental impacts on aquatic ecosystems and human health as: physical effects (changes in microbiome, water quality deterioration, ecosystem alteration), physiological effects (reproduction hamper, oxidative stress, decreased survival, metabolic damages), long-term effects (immunosuppression, carcinogenicity, geno-toxicity, neurotoxicity).70 This indicates that advanced technologies for the development of eco-design approaches for PPE production are needed.71

Nanostructures can impart their role by reducing single-use PPE by replacing them with novel reusable, self-cleaning, effective, and efficient antiviral products to minimize environmental challenges. This can be brought about by the application of antiviral NPs, nanofibers, and NP-coatings to acquire super-hydrophobicity, synergistic effects, self-cleaning functionalities with photothermal and photocatalytic sterilization.72,214 For these purposes, nanomaterials with intrinsic antiviral activity, such as AgNPs, graphene oxide (GO), CuO NPs, two-dimensional carbides, and nitrides that can capture and inactivate viruses are being investigated.176,215 Furthermore, a fluorescent NP penetrant inspection can be used for the detection of inner defects in used masks, to provide necessary data for the development of reusable masks, structural optimization, and evaluation standards.216 Less material consumption and reduced supply problems, efficient filtration due to large surface areas, cost-effective transmission control, and virus neutralization due to functionalization with chemically active groups are the main features of PPE modifications by using nanomaterials and nanotechnology.217

Size- and time-dependent particle removal efficiency is reported from different protective respiratory masks which can be optimized by nanostructured systems.218 Ag nanocluster/silica composite nanocoating impregnated in facial masks possessed a promising virucidal property, reduced the SARS-CoV-2 titer, and provided great safety to be used in crowded areas.178 In addition, SiO2 and Al2O3 NPs coated with polypropylene or polyethylene demonstrated super water repellent effects; TiO2 and MgO NP coatings provided self-sterilizing activity; indium-tin oxide NPs produced an electromagnetic/infrared protective clothing and ceramic NPs resulted in an increased abrasion resistance.219,220 Generally, the mechanisms in these NP coating effects are reported to be surface oxidation, releasing free radicals or toxic ions, ROS generation, photoreaction, inhibition of viral interaction, entry and binding.221 Nanotechnology can also increase the filtration efficiency through improving viral particle capturing and retention, enabling rapid viral inactivation after capturing them, minimizing exhaled humidity effects on particle redistribution, and providing a very thin, high-efficiency reusable filtration media.61

The application of nanofiber technology for face masks can reduce breathing resistance, maximize comfort by minimizing pressure, and provide enhanced filtration efficiency against very small viral particles (<50 nm).22 The Egyptians discovered a novel, reusable, recyclable, customizable, antimicrobial, and antiviral respirator facial mask feasible for mass production. The novel design is based on the filtration system composed of a nanofibrous matrix of polylactic acid and cellulose acetate containing CuO NPs and GO nanosheets produced by electrospinning technique.222 Nanofiber filter incorporated surgical masks showed a decrease in air-flow resistance, improved filtration efficiency, enhanced contaminant deactivation, and reduced risk of inhaling pathogens.223 Similarly, other PPE like gowns, facial shields, gloves, boots, and goggles can be advanced with the aid of efficient and multifunctional nanostructures.61,79

In the clinical trial of the COVID-19 vaccine, the two lipid mRNA-based vaccines, BNT162b2 and mRNA-1273, exhibited more than 95% efficacy, owing to their unique nanocarrier characteristics.224 Even though such effectiveness with reduced medicine intake and adverse effects can be achieved with nanomedicine, there is still a substantial concern on their toxicity. Moreover, the development of these nanostructured systems should be regulated as all marketing items must follow regulatory requirements.225,226 There is an international debate on the risk regulation of NPs. To resolve this controversy, uniform definitions of NPs are required for the identification and application of legal provisions to them and facilitate the marketing of nanotechnology-derived products. There should also be a validated method of analysis, detection, characterization, and complete information regarding the impact of nanomaterials as well as the assessment of nanomaterial exposure.227,228 The use of nanotechnology may result in significant problems, causing irreversible damage to the environment and humans, if adequate rules and legislation are not in place.229 The legal framework of nanotechnology was investigated to see if new regulatory action was necessary to address the hazards associated with nanomaterials. To take advantage from the benefits of nanoproducts, especially in severe pandemics like COVID-19, the public, customers, and employees need flexible and balanced regulatory actions based on scientific data. In addition, development of standards and guidelines on their preparation and use should be outlined to ensure safety and reduce the risk of liability.230

Authorization of substances and ingredients, qualification of hazardous waste, reinforcing conformity assessment methods, and restrictions on the entry of chemical substances and preparations to the market as well as their usage are all part of the nanomaterials regulation.227,230 Current regulatory frameworks cover a wide range of products and processes, including nanotechnologies, which implies that a separate regulator or regulatory framework may be unnecessary. However, some case studies suggest that the present framework should be modified because of the strange and uniqueness of NPs.230232 Recent discoveries such as the NP-based COVID-19 vaccines, diagnostic, and therapeutic agents as well as PPE are now coming to support the globes fight against the pandemic. However, current regulations may not be sufficient to solve their risk management, production challenges, and market issues which necessitate working more on the nanoregulatory issues parallel to nanoproduct discoveries.228 Lack of understanding and communication about the science, use, and regulation of nanotechnology among all stakeholders hurts society perceptions and regulatory decision-making.233 Even though the risks posed by nanomaterials to the environment and humans have become a global concern, it is recommended for all relevant regulatory bodies to consider the impact of NPs in protecting humans from current and future pandemics such as COVID-19.234

Regarding the pharmacoeconomic aspects, there is a debate on the economic influence of nanotechnology. Reports are indicating that its short-term effect is minor, but it will provide a substantial economic impact in the long-term. Its prospective economic effects will be fully beneficial across the society and the spectrum of developed and developing countries. There was no evidence that nanotechnologies generate economic challenges that were notably different from those raised by other technological advancements.230,235 However, certain studies predicted that nanotechnologies can offer economic benefits, including the ability to create jobs, wealth, and well-being.236 These technologies are also shown to be a cost-effective option for many challenging medicine approaches.229 A pharmacoeconomic study would allow for the most efficient use of monetary resources and the maximum health return at the lowest possible cost. The high failure rate for innovative therapeutic compounds in the drug development cycle is mostly attributable to economic considerations to save resources.237 Such cost-based approaches have a significant impact on the development of nanotechnology-derived products and management strategies against the COVID-19 pandemic.224

Nanomedicines have the potential to make a significant contribution to inexpensive health care, but a rigorous evaluation through updated cost-effectiveness evaluations is required first. In global pandemic challenges, like the current COVID-19 pandemic, the success of introducing highly-priced and efficacious, yet costly, nanotherapies to market with their affordability can be considerably improved by using specific decision-making frameworks. The implementation of comprehensive, standardized cost-effectiveness studies can shift the focus to reducing health-care costs while maintaining care quality. One major flaw in current cost-effectiveness research in the field of nanomedicine is that, practically all studies focus solely on direct treatment costs, completely ignoring indirect costs.238240 This concern may highly challenge the applicability of nanomaterials and their support on combating COVID-19 by the time the conventional approaches and repurposing strategies are unable to retard and resist its drastic global transmission. Conversely, nanomedicine has the potential to save health-care expenses by reducing treatment costs through focused therapy, reducing hospital stays, promoting healthy aging, and focusing on chronic diseases.241 This confirmed that the importance of nanotechnology in the COVID-19 vaccination and treatment will be uncountable, as COVID-19 is associated with various organ complications, needs targeted therapies, and results in chronic postinfection syndromes.242

Advanced vaccines, PPE, disinfectants, surface coatings, nanobased sensors, and therapeutic agents that will improve treatment success rates are now coming forward to the laboratories, clinical trials, and are even in the market.140,243 Simple, low-cost procedures for low-resourced medical infrastructures and less-developed nations will be the main benefiting outcomes from these nano-advanced products.88,92 Broad-spectrum antiviral nanodrug or functionalized biocompatible NPs have been synthesized which irreversibly and permanently inhibit the virion preventing the re-replication inside the host.244 Antiviral drugs and nanovaccines with lung targeting, superior circulation and retention time, remote loading, decreased systemic immunotoxicity, prodrug forms of controlled and localized release, reduced dosage, combination therapeutics, lowered dose and toxicity, and augmented cellular uptake are also reported positive outcomes.245

Connecting the biomaterial science, nanotechnology, and medicine offered novel and smart nanodelivery systems with effective prevention, efficient diagnostics, and higher efficacy therapeutics. These systems can potentially counter challenges related to site-specific delivery, controlled release and maintenance of stability which will be extremely vital in fighting the COVID-19 pandemic outbreak.95 A nanobased vaccine (mRNA-LNP) for SARS-CoV-2 is being developed and found to be successful. The utilization of nanobiomaterials for COVID-19 vaccine and therapeutics development promised more potent and versatile applications.246

Despite persisting for a very short time, there are many new investigations and patents related to COVID-19. From these patents, more than 10% are associated with nano topics including the use of different nanostructured systems for diagnostic, therapeutics, vaccination, and preventive approaches as nanocarriers, vectors, markers, filters, adjuvants, and intrinsic antimicrobials.125,247 Research and development is still underway on the effective application of nanomedicine with industrial implications to enhance safety, high sterilization capability with a low dosage, reusability, and eco- and user-friendly properties.19,188 Efficiently targeting antiviral nanocarriers and personalized therapy with precision nanomedicine are the near future perspectives of such investigations.9

In summary, COVID-19 management can benefit from nanostructured delivery systems in that it can potentiate immune response modulations which may otherwise be difficult conventionally, possess precise targeting, reduce nontarget accumulation and associated toxicities, protect drugs and vaccines from degradation and inactivation in body environment, offer alternative vaccine delivery routes, and possess promising biodegradability and biocompatibility that can be controlled.248

With those vast advantageous outcomes, clinical translation of the nanoproducts has not yet been achieved. Unpredictable side effects, safety, and toxicity concerns, long-term fate, cost and complexity of NP preparations, need for pure study designs with acceptable sample sizes and validated methods are the persisting challenges.138,139 In contrast there are also probable limitations of the promising advantages of nanoformulations including difficulty to sterilize parenteral formulations suitably, biomolecule denaturation risks, low entrapment efficiencies, biodistribution profile characterization, off-target accumulations, and uncontrollable burst release effects.22

The other vital issue is the lack of deepest understanding of the cellular, pathogenic and pathophysiologic aspects of SARS-CoV-2 and COVID-19 with the particular nanobiointerfaces involved in drug/vaccine development and delivery.8 SARS-CoV-2 also revealed different behaviors in different hosts which entails the need for the design of highly efficient nanosystems such as biomimetic organoids and organ-on-chips that can specifically assess and evaluate these behavioral variabilities.135 Even though the lungs are the best targets in COVID-19 management, direct and targeted intranasal and pulmonary nanodeliveries are associated with severe impairment in respiratory sites and lung function. Further proof is needed to assure nanomaterial safety related to intolerable inflammation, cellular damage, fibrosis, small granulomatous lesions, geno-immunotoxicity, and oxidative stress due to abnormal NP accumulation in the alveoli which results in alveolar cell damage, blood vessel penetration, and then translocation to other organs.249251 The design of such nanocarriers in such a way that the nanoformulation can escape the recognition by scavenger cells is also challenging and needs considerable effort before clinical translation.61

Scaling up, complicated fabrication process and only limited information on how and how much the NPs exert their impact on organisms with peoples reluctance to accept new technologies are other reported challenges.111

Patent and intellectual property right issues remained challenging through this global pandemic era. The Open COVID Pledge requests patent and intellectual proprietors to voluntarily sacrifice the rights in helping the free fight during the crisis, but it is still being debated as it is dependent on the willingness of the patent holders.219 Moreover, regulatory issues are still far-away for the confidential application of nanomedicine with its full potentials. Ethical, scientific, biosafety and acceptance issues by regulatory agencies hinder nanomedicine to produce safe and high-quality nanodrugs including antivirals of this pandemic.9,135

Having the opportunities and the challenges from nanotechnology, nanomedicine, and biotechnology in mind, the pharmaceutical society must put endless effort on investigating nanotherapies to manage COVID-19. Here, from the pharmaceutical point of view, searching for better antimicrobial/antiviral therapeutic agents with better efficacy and minimized adverse effects, optimizing dosages, and delivery systems for carriers and targets, investigating biocompatible, bio-functionalized, nanodrug loading systems; designing stimuli-responsive, immunosupportive, and immunomodulating agents by using nanopharmacology concepts, and developing personalized nanotherapeutics are based on variations of the effects of SARS-CoV-2 and patient-specific disease profiles.82

The current pandemic crisis can be taken as a golden opportunity for the transformation of nanomedicine by intensifying the safety to risk ratio of nanostructures. For this to be true, in-depth investigational study, experience-sharing, and exchange of knowledge among different countries, different departments, and different companies including regulatory agencies are essential.9,176 Early stage regulatory guidelines with a mid and long-term research on positive opportunities and about factors that limit their applicability are needed. This can enable the global medical practice against the current and future pandemics.46

Nanomedicine is now trying to combine the advance from machine learning, artificial intelligence (AI), and internet of medical things (IoMT) for modeling, encoding and interpreting cell-nanomaterial interactions which is crucial to forecast biosafety, predict efficacy, and formulate quantitative nanostructure activity-relationship (nano-QSAR). These combined applications can support the global struggle against COVID-19 by providing simplified data collection, mobile-sensing, as well as self-sampling of COVID-19 tests. Other related technologies such as robotics, telemedicine and 3D-printing can further complement the effective application of nanomedicine in fighting the pandemic.108,252

Even though the COVID pandemic is accelerating globally, there are still no approved drugs and internationally accepted free-access vaccines to counter its worldwide spread. Accurate prevention, rapid and early detection, effective immunomodulation, and definitive treatment strategies are not yet outlined. Nanostructured drug development and delivery-based research and development is now promising the world to end the pandemic effectively and shortly with radically modified therapeutic, diagnostic and prevention options. Should all regulatory, scale-up, and safety issues be settled, nanotechnology can guarantee the world for the current and the next unpredictable pandemic crisis. Extensive scientific research and collaborative multidisciplinary efforts are needed for its practically extrapolatable outcome.

ACE2, angiotensin converting enzyme-2; BBB, bloodbrain barrier; CNS, central nervous system; COVID-19, coronavirus disease-2019; CPT, convalescent plasma therapy; CQ, chloroquine; DNA, deoxyribonucleic acid; HCoV, human corona viruses; HCQ, hydroxychloroquine; IL, interleukin; LNP, lipid nanoparticle; NP, nanoparticle; PCR, polymerase chain reaction; PLGA, poly lactic-co-glycolic acid; POC(D/T), point-of-care (diagnosis/testing); PPE, personal protective equipment; RBD, receptor-binding domain; ROS, reactive oxygen specious; RNA, ribonucleic acid; S, spike; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2; VLNP, virus-like nanoparticle; VLP, virus-like protein; WHO, World Health Organization.

Addis Ababa University and Bahir Dar University are thankfully acknowledged for giving us internet access.

All authors made a significant contribution to the work reported, whether that is in the conception, execution, acquisition of data, analysis and interpretation, or in all these areas; took part in drafting, revising or critically reviewing the article; gave final approval of the version to be published; have agreed on the journal to which the article has been submitted; and agreed to be accountable for all aspects of the work.

The authors report no conflicts of interest in this work.

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2. Perlman S. Another decade, another coronavirus. New Engl J Med. 2020;382(8):760762. doi:10.1056/NEJMe2001126

3. Gorbalenya AE, Baker SC, Baric RS, et al. The species severe acute respiratory syndrome-related coronavirus: classifying 2019-nCoV and naming it SARS-CoV-2. Nat Microbiol. 2020;5(4):536544.4.

4. Wu JT, Leung K, Leung GM. Nowcasting and forecasting the potential domestic and international spread of the 2019-nCoV outbreak originating in Wuhan, China: a modelling study. Lancet. 2020;395:689. doi:10.1016/S0140-6736(20)30260-9

5. Gavriatopoulou M, Korompoki E, Fotiou D, et al. Organ-specific manifestations of COVID-19 infection. Clin Exp Med. 2020;7:114.

6. Glebov OO. Understanding SARS-CoV-2 endocytosis for COVID-19 drug repurposing. FEBS J. 2020;287:36643671. doi:10.1111/febs.15369

7. Ullah MA, Araf Y, Sarkar B, Moin AT, Reshad RA, Hasanur MD. Pathogenesis, diagnosis and possible therapeutic options for COVID-19. J Clin Exp Invest. 2020;11:em00755. doi:10.29333/jcei/8564

8. Cardoso VMO, Moreira BJ, Comparetti EJ, et al. Is nanotechnology helping in the fight against COVID-19? Front Nanotechnol. 2020;2:588915. doi:10.3389/fnano.2020.588915

9. Rai M, Bonde S, Yadav A, et al. Nanotechnology-based promising strategies for the management of COVID-19: current development and constraints. Expert Rev Anti Infect Ther. 2020:110. doi:10.1080/14787210.2021.1836961

10. WHO. COVID-19 dashboard. Available from: https://covid19.who.int/. Accessed June 15, 2021.

11. Lovato A, de Filippis C. Clinical presentation of COVID-19: a systematic review focusing on upper airway symptoms. Ear Nose Throat J. 2020;99(9):569576.

12. Mizumoto K, Kagaya K, Zarebski A, Chowell G. Estimating the asymptomatic proportion of coronavirus disease 2019 (COVID-19) cases on board the Diamond Princess cruise ship, Yokohama, Japan, 2020. Euro Surveill. 2020;25(10). doi:10.2807/1560-7917.ES.2020.25.10.2000180

13. Shereen MA, Khan S, Kazmi A, Bashir N, Siddique R. COVID-19 infection: origin, transmission, and characteristics of human coronaviruses. J Adv Res. 2020;24:9198. doi:10.1016/j.jare.2020.03.005

14. Cai J, Sun W, Huang J, Gamber M, Wu J, He G. Indirect virus transmission in cluster of COVID-19 cases, Wenzhou, China, 2020. Emerg Infect Dis. 2020;26(6):13431345. doi:10.3201/eid2606.200412

15. Chhantyal P. Cicadas antimicrobial nanotechnology solution for COVID free surfaces; 2020. Available from: https://www.azonano.com/article.aspx?ArticleID=5621. Accessed June 12, 2021.

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Could Nanotechnology Help to End the Fight Against COVID-19? | IJN - Dove Medical Press

Updating the PLOS ONE Nanomaterials Collection Author Perspectives, Part 2 – EveryONE – PLoS Blogs

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In July, we updated our Nanomaterials Collection, featuring papers published over the past few years in PLOS ONE. This collection showcases the breadth of the nanomaterials community at PLOS ONE, and includes papers on a variety of topics, such as the fabrication of nanomaterials, nanomaterial-cell interactions, the role of nanomaterials in drug delivery, and nanomaterials in the environment.

To celebrate this updated collection, we are conducting a series of Q&As with authors whose work is included in the collection. Next out is our conversations with Lauren Crandon from OnTo Technology and Robert Zucker from the U.S. Environmental Protection Agency. In this Q&A, they discuss the importance of understanding the environmental fate of nanomaterials, new technology development, and their experiences of making new discoveries in the lab. We will be adding more author interviews over the next few weeks, so please do keep checking back.

Lauren Crandon OnTo Technology

Lauren Crandon is a Research and Development Engineer with OnTo Technology in Bend, OR. She develops technology to recycle lithium-ion batteries, including nanomaterials. She received her Ph.D. from Oregon State University in Environmental Engineering, where she researched the environmental fate and impacts of nanomaterials.

Lauren Crandons paper in the Nanomaterials Collection: Crandon LE, Boenisch KM, Harper BJ, Harper SL (2020) Adaptive methodology to determine hydrophobicity of nanomaterials in situ. PLoS ONE 15(6): e0233844. https://doi.org/10.1371/journal.pone.0233844

What motivated you to work in this field?

LC: I knew I wanted to study the environmental implications of emerging contaminants. When I first walked into the Harper Nanotoxicology Lab at Oregon State, I got so excited about nanomaterials. I learned that more and more fields in technology, medicine, and industry were using nanoparticles and that these would all be eventually released into the environment. In our lab, we looked at the implications of this at both the small scale (within individual organism) and the large scale (how far downstream nanoparticles will end up). If we can develop a good understanding of fate, transport, and toxicity, we can responsibly develop nano-enabled technology for the future.

Nanomaterials research has increased in popularity over the past few years as a research topic. Do you envision that the field can continue to grow in this way, and do you see any challenges on the horizon?

LC: I absolutely believe the field of nanomaterials will continue to grow. For example, lithium-ion batteries are starting to use nanomaterials to improve performance and nanoparticle-based sunscreens are becoming more popular due to concerns with their chemical alternatives. I think we will also see exciting breakthroughs in nanomedicine, among other fields. The main challenge will continue to be evaluating human and environmental safety at end-of-life for these applications. It is difficult to establish standards and regulations, since the fate and behavior of nanomaterials depends on their environment. However, this will be important for sustainable use.

Can you tell us about an experience during your research, whether in lab or at the computer or in conversation etc., where something finally clicked, or worked?

LC: Yes! I was collaborating with a toxicology graduate student in my lab to compare the toxicity of Cu and CuO nanoparticles in zebrafish. The CuO NPs were much less toxic, but we could not explain why. They dissolved more Cu+2, which was generally accepted to be the toxic mechanism. When I applied one of the standard assays I was working on to measure reactive oxygen species (ROS), the trends matched! Cu NPs generated much more ROS than CuO, which explained the higher toxicity. Applying a standardized test to NPs in a specific testing environment allowed us to model and predict toxicity. I spent the rest of my graduate work continuing to standardize rapid assays for commercially used nanoparticles and correlating my results with their toxicity. I hope this can help us predict the potential risks of materials as they enter the market.

Is there a specific research area where a collaboration with the nanomaterials community could be particularly interesting for interdisciplinary research?

LC: I am very excited about applications of nanomaterials in energy storage devices and medicine. I hope that as these materials continue to enter the market, nanotoxicology research will continue to be funded and part of the story. Nanomaterials offer novel properties that bring major benefits but also do not always follow conventional toxicology. I would like to see collaboration with the technology industry and environmental toxicology to responsibly produce the next generation of novel materials.

Robert Zucker U.S. Environmental Protection Agency

Dr. Robert Zucker is a Research Biologist at the U.S. Environmental Protection Agencys Center for Public Health and Environmental Assessment. His research involves applying biophysical technologies of imaging and flow cytometry to reproductive toxicology questions.

Robert Zuckers paper in the Nanomaterials Collection: Zucker RM, Ortenzio J, Degn LL, Boyes WK (2020) Detection of large extracellular silver nanoparticle rings observed during mitosis using darkfield microscopy. PLoS ONE 15(12): e0240268. https://doi.org/10.1371/journal.pone.0240268

What route did you take to where you currently are in your career?

RZ: I obtained a BS in physics from The University of California, Los Angeles (UCLA) and obtained a masters degree at UCLA in the Laboratory of Nuclear Medicine and Radiation Biology in the field of biophysics and nuclear medicine. I also received my PhD in biophysics at UCLA studying biophysical separation and characterization of hematological cells. After graduating from UCLA, I did a two-year Post-Doc at the Max Planck Institute in Munich Germany in immunology. When I returned to America, I became a principal investigator at the Papanicolaou Cancer Institute and an adjunct associate professor at the University of Miami for 12 years. In this position, I was involved in cancer research and was a member of the Miami sickle cell center. My next position was at the EPA in Research Triangle Park, NC, applying biophysical technologies of imaging and flow cytometry to reproductive toxicology questions.

What emerging topics in your field are you particularly excited about?

RZ: Flow cytometry has been around for over 50 years. Recently, the technology has been improved by using five lasers with 64 detectors. This provides a system with better resolution. In addition, the software incorporated into the system allows the removal of autofluoresence noise to increase the detection of cells or particles.

Optical microscopes, cameras and equipment have improved to allow scientists to easily obtain digital images, which are high resolution. The new microscopes are automated allowing the scientist to design and achieve experiments that were not previously feasible. For example, the current microscope allows us to use widefield confocal microscopy on 2D images that can be deconvolved with software built into the system for higher resolution. It is quicker than point-scanning confocal microscopy. The machines can obtain sequential measurements over time on one field or take images from multiple fields.

How important are open science practices in your field? Do you have any success stories from your own research of sharing or reusing code, data, protocols, open hardware, interacting with preprints, or something else?

RZ: It is important to follow ones scientific instinctsthe EPA is an organization that allows this freedom to their investigators to research projects of interest to the Agency. I have two success stories to share from my own research.

Success story #1: In the field of nanoparticles, I observed that TiO2 was extremely reflective using darkfield microscopy. Using flow cytometry, granulocytes, monocytes, and neutrophils can be identified based on size (forward scatter) and internal structure (side scatter) from the granules contained in the neutrophils. Can this scatter signal be used to detect a dose response of uptake of nanoparticles by a cell? To try to answer this question, we used two concentration of TiO2 in an experiment, and a dose response was observed with these two-concentration compared to controls. This procedure has subsequently been reproduced by a number of investigations with various types of metal nanoparticles. One of our papers was published in PLOS One and compared the effect of different coating of silver particles coatings on uptake and toxicity by mammalian cells.

Success story #2: The confocal microscope allows scientists to see embryo and reproductive structures in 3D using fluorescence staining technology. By applying very old technologies used to clear tissues, we were able to see very deep into tissues. This procedure allowed the internal structures of reproductive tissues and developing embryos to be observed. The data were used to support the hypothesis that studied how the chemicals affected these tissues.

If you could dream really big, is there a particular material, function or material property that seems far away at the moment, but you think could be attained in the future?

RZ: My dream would be to use the current spectral flow cytometer to predict 1) the effects of microplastics on mammalian cells 2) to detect the effects of climate change on cyanobacteria growth and toxin production 3) to spectrally detect microplastics in water. I would want to provide a simple imaging test to 4) detect microplastics in water by their higher reflectivity 5) to provide an instant imaging quantitation of the amount of Algae and Cyanobacteria in a water sample based on differential excitation fluorescence, and 6) use spectral features of photosynthesis fluorescence and autofluoresence to determine the health of plants and cyanobacteria and then relate this data to the environment.

Disclaimer: Views expressed by contributors are solely those of individual contributors, and not necessarily those of PLOS.

Featured image: http://dx.doi.org/10.1371/journal.pone.0133088

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Are Radioactive Diamond Batteries the Solution to Nuclear Waste? – Interesting Engineering

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Nuclear power is considered a clean energy source because it has zero carbon dioxide emissions; yet, at the same time, it produces massive amounts of hazardous, radioactive waste that pile up asmore and more reactors are built around the world.

Experts have proposed different solutions for this issue in order to take better care of the environment and peoples health. With insufficient safe storage space for nuclear waste disposal, the focal point of these ideas is the reutilization of the materials.

Radioactive diamond batterieswere first developed in 2016 and were immediately acclaimed because they promised a new, cost-effective way of recycling nuclear waste. In this context, its unavoidable to deliberate whether theyre the ultimate solution to these toxic, lethal residues.

Radioactive diamond batteries were first developed by a team of physicists and chemists from the Cabot Institute for the Environment of the University of Bristol. The invention was presented as a betavoltaic device, which means that its powered by the beta decay of nuclear waste.

Beta decay is a type of radioactive decay that occurs when an atoms nucleus has an excess of particles and releases some of them to obtain a more stable ratio of protons to neutrons. This produces a kind of ionizing radiation called beta radiation, which involves a lot of high-speed and high-energy electrons or positrons known as beta particles.

Beta particles contain nuclear energy that can be converted into electric energy through a semiconductor.

A typical betavoltaic cell consists of thin layers of radioactive material placed between semiconductors. As the nuclear material decays, it emits beta particles that knock electrons loose in the semiconductor, creating an electric current.

However, the power density of the radioactive source is lower the further it is from the semiconductor. On top of this, because beta particles are randomly emitted in all directions, only a small number of them will hit the semiconductor, and only a small number of those will be converted into electricity. This means that nuclear batteries are much less efficient than other types of batteries.This is where the polycrystalline diamond (PCD) comes in.

The radioactive diamond batteries are made using a process called chemical vapor deposition, which is widely used for artificial diamond manufacture. It uses a mixture of hydrogen and methane plasma to grow diamond films at very high temperatures. Researchers havemodified the CVD process to grow radioactive diamonds by using a radioactive methane containing the radioactive isotope Carbon-14, which is found on irradiated reactor graphite blocks.

Diamond is one of the hardest materials that humanity knows its even harder than silicon carbide. And itcan act as both a radioactive sourceanda semiconductor. Expose it to beta radiation and youll get a long-duration battery that doesnt need to be recharged. The nuclear waste in its interior fuels it over and over again, allowing it to self-charge for ages.

However, the Bristol team warned that their radioactive diamond batteries wouldnt be suitable for laptops or smartphones, because they contain only 1g of carbon-14, meaning that they provide very low power only a few microwatts, which is less than a typical AA battery. Therefore, their application so far is limited to small devices that must stay unattended for a long time, such as sensors and pacemakers.

The origins of nuclear batteries can be traced back to 1913, when English physicist Henry Moseley found out that particle radiation could generate an electric current. In the 1950s and 1960s, the aerospace industry was very interested in Moseleys discovery, as it could potentially power spacecraft for long-duration missions. The RCA Corporation also researched an application for nuclear batteries in radio receivers and hearing aids.

But other technologies were needed in order to develop and sustain the invention. In this regard, the usage of synthetic diamonds is seen as revolutionary, as it provides safety and conductivity to the radioactive battery. With the addition of nanotechnology, an American company built a high-power nano-diamond battery.

Based in San Francisco, California, NDB Inc. was founded in 2012 with the objective of creating a cleaner and greener alternative to conventional batteries. The startup introduced its version of diamond-based batteries in 2016 and announced two proof-of-concept tests in 2020. Its one of the firms that is attempting to commercialize radioactive diamond batteries.

Nano-diamond batteries from NDB are described as alpha, beta, and neutron voltaic batteries and have several new features according to their website.

Nano-diamond batteries are scheduled to come onto the market in 2023.

Arkenlight, the English firm commercializing Bristols radioactive diamond battery, plans on releasing their first product, a microbattery, to the market in the latter part of 2023.

The portability of modern electronic devices, the increasing popularity of electric vehicles, and the 21st Century race to take humanity on long space missions to Mars have triggered a growing interest in battery technology research in the last few years.

Some types of batteries are more appropriate for certain applications and not as useful for others. But we can say that the conventional lithium-ion batteries that we are familiar with won't be replaced with radioactive diamond batteries any time soon.

Conventional batteries last a shorter time, but they are also much cheaper to manufacture. However, at the same time, the fact that they do not last that long (they have a lifespan of about five years) is problematic, because they also produce a great deal of electronic waste, which is not easy to recycle.

Radioactive diamond batteries are more convenient, because they have a much longer lifespan than conventional batteries. If they can be developed into a universal battery, like NDB Inc. proposes, we could end up with smartphone batteries that last much longer than the life of the smartphone, and we could simply change the battery from one phone to the next, much as we now transfer the SIM card.

However, the diamond betavoltaics developed by Arkenlight won't go that far.The company is working on designs that stack up lots of their carbon-14 betabatteries into cells. To provide high power discharge, each cell could be accompanied by a small supercapacitor, which could offer an excellent quick-discharge capability.

However, this radioactive material also has a lifespan of more than 5000 years. If that radiation were to leak out of the device ingaseous form, it could be a problem. That's where the diamonds come in. In the diamond formation, the C-14 is a solid, so it can't be extracted and absorbed by a living being.

The United Kingdom Atomic Energy Authority (UKAEA) calculated that 100 pounds (approximately 45 kg) of carbon-14 could allow the fabrication of millions of long-duration diamond-based batteries. These batteries could also reduce the costs of nuclear waste storage.

University of Bristol researcher Professor Tom Scott told Nuclear Energy Insider that,By removing the Carbon-14 from irradiated graphite directly from the reactor, this would make the remaining waste products less radioactive and therefore easier to manage and dispose of. Cost estimates for disposing of the graphite waste are 46,000 pounds ($60,000) per cubic meter for Intermediate Level Waste [ILW] and 3,000 pounds ($4,000) per cubic meter for Low-Level Waste [LLW]."

Dont all these features make them one of the best options for the sustainable future that we need? Well have to wait and see if the manufacturers can find a way of dealing with production costs and low energy output, and get their diamond-based batteries onto the market cost-effectively and accessibly.

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Are Radioactive Diamond Batteries the Solution to Nuclear Waste? - Interesting Engineering