Hair-thin ‘electronic skin’ monitors hearts and brains, controls video games | Not Exactly Rocket Science

I’ve got a story out in Nature News about an “electronic skin” that can monitor a person’s heartbeat, brain activity, muscle contractions and more, without the need for bulky conventional electronics. It’s no thicker than a human hair and can be applied as easily as a temporary tattoo. It sticks without the need for any glue, and can flex and stretch without breaking.

It’s an amazing piece of technology. Go to Nature to read the full story. Meanwhile, I’m posting the full (lightly edited) transcript of my chat with John Rogers from the University of Illinois at Urbana-Champaign, who led the development of the electronic skin. He said a lot of interesting stuff that didn’t make it into the final piece and really gets across the many potential applications of the device.

Why did you try and design an electronic skin?

It’s a natural progression of the flexible electronics that we’ve been working on for years. The origins of our work date back 15 years almost. We previously looked at cardiac devices and brain imaging devices that mount on the internal tissues of the body. I’m a material scientist ...

Two Shuttles, nose to nose | Bad Astronomy

Here’s something you don’t see every day.. or will ever again: two Space Shuttle Orbiters, nose to nose:

[Click to enspaceplanate.]

The two Orbiters, Discovery and Endeavour, are seen here outside the Vehicle Assembly Building at NASA’s Kennedy Space Center. Both are being cleaned up and prepped to be shipped (or, more properly, flown) to museums; Discovery to the Smithsonian’s Udvar-Hazy Center in Chantilly, Virginia, and Endeavour to the California Science Center in Los Angeles.

[UPDATE: Here's a shot of the two Orbiters seen from the air!

Very, very cool.]

I expect at some point I’ll pay these ladies a visit. Discovery and I have a connection — it took a camera I worked on up to Hubble back in 1997 — and it’ll be interesting, if also a touch melancholy, to see them up close.

Image credit: NASA

Related posts:

- Where the Shuttles will come to rest
- Deconstructing Discovery
- The fiery descent of Atlantis… in 3D!
- Atlantis, one last time in the Sun


When Life Gives You Spider Silk, Make Artificial Skin | 80beats

spacing is importantLeft: the silk mesh 1 day after being seeded with fibroblast cells. Right: 4 days after seeding.

What’s the News: People have long known that spider silk has many practical uses, even in the medical field; Ancient Greeks, for example, employed the strong, flexible fiber as bandages. But the clinical uses of spider silk may stretch beyond that: scientists may someday be able to use the silk to help create artificial skin, according to new research out of the Hannover Medical School in Germany. In the study, published recently in the journal PLoS One, researchers successfully grew tissue-like skin on a mesh frame of silk harvested from golden silk orb-weaver spiders.

What’s the Context:

Adult skin is made up of two tissue layers: the epidermis and dermis. The epidermis is the outermost layer of the skin, which provides a sort of barrier against the environment. Below this is the dermis, a layer of tissue that provides strength, nourishment, and resilience to the epidermis.
Effective artificial skin (for patients that need skin grafts, ...


Bachmann Anti-Enlightenment? You’re Surprised? | The Intersection

There is much dissecting of the New Yorker profile of Michele Bachmann, and much amazement that, hey, she digs conservative Christian thinkers who come from a different galaxy than secular liberals. So here’s the L.A. Times blog Culture Monster, discussing two of Bachmann’s intellectual influences, Nancy Pearcey and Francis Schaeffer:

Pearcey’s book lauds Schaeffer’s empathy for artists who are “caught in the trap of false and harmful worldviews” — specifically, those that have trickled down from wicked Renaissance humanism. “As the medieval period merged into the Renaissance (beginning roughly in the 1300s),” she wrote, “a drumbeat began to sound for the complete emancipation of reason from revelation — a crescendo that burst into full force in the Enlightenment (beginning in the 1700s).”

Darn that Enlightenment! Next thing you know it will be birthing truly dangerous ideas, like secular democracy.

I used to write commentary like this. I don’t any more.

The reason is that I’m no longer at all surprised to hear that the Enlightenment is what actually divides us. This reality is written all over every single aspect of American politics, after all.

If you are someone who craves “total truth” (the title of Pearcey’s book), and wants uncertainty completely vanquished, you aren’t going to opt for fricken modern science, after all. Religion is going to be a heck of a lot more consoling, and especially its most fundamentalist versions.

What we have to recognize is, despite Enlightenment achievements in knowledge and in politics, people didn’t change. They’re still the same as they always were. The irony is how the people who grok Enlightenment still manage to remain so un-Enlightened about the people who don’t.


Gene Therapy Brings Three Cancer Patients Back From Death’s Door; What Now? | 80beats

leuk
Modified immune cells decimated chronic lymphocytic leukemia, scientists found.

What’s the News: Striking results in a very small study have got the web a-buzz about a new cancer treatment: With three leukemia patients at the ends of their ropes, scientists modified some of their immune cells with a gene that enabled them to hunt down cancer cells. Remarkably, the treatment wiped out more than two pounds of tumor tissue in each patient, and the three have now been in remission for a year.

But what weight does such a small study carry, what about the side effects, and what do these results mean for people with other cancers?

How the Heck:

First, the team removed immune cells called T cells from each of the patients, who had chronic lymphocytic leukemia, a cancer affecting blood cells called B cells.
They had a lab-built virus insert a gene for a protein that would recognize a specific tag appearing only on the surface of B cells, as well as genes for two other proteins involved in the process, into the T cells. (This kind of treatment, called gene therapy, has been of interest in treating cancer ...


Pregnant plesiosaur with giant foetus hints at caring parents | Not Exactly Rocket Science

In 1987, Charles Bonner discovered the fossilised bones of a large sea reptile on his family ranch. It was a flipper-limbed plesiosaur, probably Polycotylus, and one of many such fossils recovered from Logan County in Kansas. But this specimen was special – there was a smaller one inside it. This plesiosaur was pregnant.

The Bonners donated the find to the Natural History Museum of LA County, where it languished for years. No one had the resources to prepare and study it until Luis Chiappe decided to include the specimen in the new exhibit halls he was preparing. He brought in Robin O’Keefe from Marshall University to analyse the historic find.

The mass of small bones inside the adult is haphazardly arranged, but O’Keefe and Chiappe think that it was clearly a foetus. The skeleton shows signs of incomplete growth, as it includes the distinctive forearm bone of Polycotylus. It shows no signs of having been chewed or exposed to stomach acid, so it wasn’t a youngster that the adult had cannibalised.

O’Keefe and Chiappe’s discovery suggests that this reptile gave birth to live young. This isn’t that surprising. Most modern ...

Bang! | Bad Astronomy

450 million light years away are two interacting galaxies. Both spirals, they are caught in each other’s gravitational claws. Already distorted and bound, eventually, to merge into one larger galaxy in a few million years, the view we have of them from Earth is both amazing and lovely… and hey: they’re punctuating their own predicament!

[Click to exclamatenate.]

Looking a lot like an exclamation point, the two galaxies together are called Arp 302 (or VV 340). This image is a combination of pictures from the Chandra X-Ray Observatory (purple) and Hubble (red, green, and blue). The bottom galaxy is a face-on spiral, while the upper one is seen more edge-on, giving the pair their typographical appearance.

They’re pretty nifty even if it weren’t for the funny coincidence of shape. The upper galaxy has a supermassive black hole in its core that’s actively feeding, but is obscured by thick layers of dust — the abundance of dust is clear in the upper picture, where in optical light it blocks the brighter material behind it (and the warped appearance ...


Listen in on the Perseid meteor shower | Bad Astronomy

The Moon is putting a big wet blanket on this year’s Perseid meteor shower, making it hard to see them.

But that’s OK: if you can’t see them, why not listen to them?

Sounds weird, but thanks to SpaceWeatherRadio, now you can! You’re not really hearing sound, of course: meteors burn up in our atmosphere at a height of 100 km or so, too high to directly carry sound waves. But the Air Force has a radar surveillance facility in Texas that beams radio waves into the sky. When a bit of cosmic fluff streaks through our sky, the ionized trail it leaves reflects the radio waves, producing an echo. This radio wave is then translated into sound, so you can effectively hear a meteor! Here’s an example of a Geminid meteor; it sounds like it could’ve been pulled right off the soundtrack for "Forbidden Planet". There’s also more info on how this works on the NASA science page.

If you want to listen live, here you go. I had it going for a while and heard several faint but ...


Why Menupages exists | Gene Expression

You’ve wondered I’m sure. I have. Why are restaurant websites so horrifically bad?:

…The rest of the Web long ago did away with auto-playing music, Flash buttons and menus, and elaborate intro pages, but restaurant sites seem stuck in 1999. The problem is getting worse in the age of the mobile Web—Flash doesn’t work on Apple’s devices, and while some of these sites do load on non-Apple smartphones, they take forever to do so, and their finicky

I did get a plausible-sounding explanation of the design process from Tom Bohan, who heads up Menupages, the fantastic site that lists menus of restaurants in several large cities. “Say you’re a designer and you’ve got to demo a site you’ve spent two months creating,” Bohan explains. “Your client is someone in their 50s who runs a restaurant but is not very in tune with technology. What’s going to impress them more: Something with music and moving images, something that looks very fancy to someone who doesn’t know about optimizing the Web for consumer use, or if you show them a bare-bones site that just lists all the information? I bet it would be the former—they would think it’s great and money well spent.”

Not ...

Half the variation in I.Q. due to variation in genes | Gene Expression

A new paper in Molecular Psychiatry has been reported on extensively in the media, and readers have mentioned it several times in the comments. I read it. It’s titled Genome-wide association studies establish that human intelligence is highly heritable and polygenic. But the fact is that I read this paper last year. Back then it was titled Common SNPs explain a large proportion of the heritability for human height. I kid, but you get the picture. The new paper establishes for intelligence what we already suspected: most of the genetic variation in this heritable trait is accounted for by numerous genes of small effect. You inherit variants of these numerous genes from your two parents, and your own trait value is to a large extent a combination of the parental values. The issue is not if intelligence is heritable, but the extent of that heritability.

The standard way to estimate human heritability was to track similarities across individuals with varying degrees of relatedness. For example, compare identical twin correlations on a trait with fraternal twin correlations. The main objection to these methods is that one could argue ...

NCBI ROFL: The Big, the Bad, and the Boozed-Up. | Discoblog

It’s booze week on NCBI ROFL! All this week we’ll be featuring articles about ethanol, ethyl alcohol, and even CH3CH2OH. Enjoy!

The Big, the Bad, and the Boozed-Up: Weight Moderates the Effect of Alcohol on Aggression.

“Most people avoid the “big, drunk guy” in bars because they don’t want to get assaulted. Is this stereotype supported by empirical evidence? Unfortunately, no scientific work has investigated this topic. Based on the recalibrational theory of anger and embodied cognition theory, we predicted that heavier men would behave the most aggressively when intoxicated. In two independent experiments (Ns= 553 and 327, respectively), participants consumed either alcohol or placebo beverages and then completed an aggression task in which they could administer painful electric shocks to a fictitious opponent. Both experiments showed that weight interacted with alcohol and gender to predict the highest amount of aggression among intoxicated heavy men. The results suggest that an embodied cognition approach is useful in understanding intoxicated aggression. Apparently there is a kernel of truth in the stereotype of the “big, drunk, aggressive guy.”"

Photo: flickr/ peretzp

Related content:

Discoblog: NCBI ROFL: Surprise! ...


Small, Sneaky Squid Produce Big Sperm | 80beats

spacing is important

What’s the News: In the squid world, the body size of male spear squid determines the mating strategies they use. Small male squid, which have no chance of physically competing with their larger rivals, must try to get with the females of the species on the sly. Now, researchers in Tokyo have learned that this difference in mating behavior has resulted in the evolution of divergent sperm types, though perhaps not in the way you’d think: diminutive male squid actually produce larger sperm than big male squid.

What’s the Context:

Male spear squid, also known as Bleeker’s squid, are either large “consorts,” or small “sneakers.” During mating, consorts will try to court a female by flashing vibrant colors across their bodies; if successful, a consort will place a packet of sperm, called a spermatophore, into the female’s oviduct, a tube that leads to her ovaries. As you’d expect from his title, the consort male will then guard his ...


Scientists Confirm: Blood Test Can Tell A Fetus’s Sex at Seven Weeks | 80beats

What’s the News: A blood test can reliably tell a mother-to-be whether to expect a boy or girl as early as seven weeks into pregnancy, according to a new analysis published today in the Journal of the American Medical Association. The test can distinguish the sex of a fetus up to three months earlier than an ultrasound can, and doesn’t carry the slight risk of miscarriage that accompanies invasive tests such as amniocentesis.

How the Heck:

The test works by detecting tiny bits of fetal DNA floating through an expectant mom’s bloodstream. In particular, the test looks for little fragments of a Y chromosome, which only males have. Some Y chromosome DNA in the blood sample means it’s a boy; none means it’s a girl.
Of course, this method isn’t perfect. The test could fail to recognize a minute amount of male DNA in a sample, or mistakenly detect a bit of a Y chromosome where there isn’t. So, the researchers set out to determine just how accurate this test was. They analyzed all the data from 57 previous studies of the technique, looking at a combined total of more ...


Success! Functioning Anal Sphincter Grown in a Petri Dish | Discoblog

anal sphincter

Eyes, sperm, you name it: these days, chances are someone’s cooking it up on a little slab of agar and gearing up to graft/sew/implant it in anything that comes near. Today’s body part is the anal sphincter, that handy little ring of muscle that maintains the separation between your insides and your outsides. Researchers grew them from cells, implanted them in mice, and compared the new sphincters’ function with the animals’, ah, native orifices. And apparently, they were quite satisfactory.

You young whippersnappers out there might not realize it, of course. But malfunctioning sphincters are a big, messy problem as you get older, and a lot of people suffering from fecal incontinence (including women recovering from births, which can put everything down there out of whack) could benefit from this research. Right now, Depends or surgery with high rates of complication are what people with damaged sphincters have to choose from, and the possibility of replacing the muscle is intriguing.

The major step forward made here is that these sphincters, which were grown in a circular mold from human muscle biopsy cells and mouse nerve cells, could, by virtue of those nerve ...


Success: SETI array back on track! | Bad Astronomy

Via Alan Boyle’s Cosmic Log blog, I am very pleased to find out that the mothballed SETI telescope array will soon be operating again!

As I reported here a few of months ago, the SETI Allen Telescope Array had to be shut down due to a lack of funds. It costs roughly $2.5M per year to keep it running, and the funding agencies were pulling back. The folks at SETI decided to create a public fund drive called SETIstars, hoping to raise the $200,000 needed to kickstart the project again.

As of a few days ago, that goal was reached! I was happy to see that people such as Jodie Foster (who played SETI astronomer Ellie Arroway in the movie "Contact") and science fiction author Larry Niven were among people who had contributed, as well as Apollo 8 astronaut Bill Anders.

The $200k donated is enough to get things started again, but not enough to continue operations, so it looks like there will be more fund (and awareness) raising soon by SETI. I think this is a pretty interesting endeavor; SETI has long been a political and ...


SMBC on the brain | Bad Astronomy

I was on travel yesterday and didn’t get a chance to link to the Saturday Morning Breakfast Cereal web comic, leading to approximately a metric ton of emails and notes on Twitter telling me about it. I know, the sample I have extracted below doesn’t give you a hint why people would be telling me about this particular strip, but click it to get the whole picture.

OK, spoilers below the fold! Don’t read until you’ve looked at the comic!

Yes, that’s me, and yes, that’s Neil Tyson. Normally, I’d be concerned (if not outright repulsed) by being involved in the life cycle of a parasitic organism, but since (SMBC artist) Zach’s wife, Kelly, studies those things, I have to face the fact that he does this out of love. Also, the cercariae in Zach’s brain make him create comics that he knows will get put into my blog, so who’s the parasite and who’s the host now, huh?

[NB: Zach is now selling his SMBC book. You may also recognize his fashion model at the bottom of that page. Time to update my resumé!]

Related posts:

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Reason and the Mind of Michele Bachmann | The Intersection

By Jon Winsor

A couple weeks ago, when Chris described the Tea Party as authoritarian, I had to stop and think–how could that be? The Tea Party bills itself as libertarian. How could it be simultaneously authoritarian? How would that work?

Ryan Lizza’s great profile of Michele Bachmann in The New Yorker shows us. I’d encourage people to read the whole thing, but a couple key paragraphs jumped out at me. The first is Lizza’s description of Bachmann’s religious influences: theologian Francis Schaeffer (a very important theologian for modern evangelical activism), and a leading proponent of Schaffer’s, Nancy Pearcey:

[Pearcey taught] readers how to implement Schaeffer’s idea that a Biblical world view should suffuse every aspect of one’s life. She tells her readers to be extremely cautious with ideas from non-Christians. There may “be occasions when Christians are mistaken on some point while nonbelievers get it right,” she writes in “Total Truth.” “Nevertheless, the overall systems of thought constructed by nonbelievers will be false—for if the system is not built on Biblical truth, then it will be built on some other ultimate principle. Even individual truths will be seen through the distorting lens of a false world view.

Is the Bible a clearly discernible “system” that competes with all other systems? There are many ways to interpret the Bible, so who gets to say when the Bible and a “system” conflicts? The implication is that some people are continually right in some sense, and others are continually wrong, regardless of the demonstrable cases where the “right” people might be in error.

A second paragraph that jumped out at me has to do with the beginning of Bachmann’s political career:

Bachmann was getting interested in politics just as her party was getting interested in people like her. In the late nineteen-nineties, she began travelling throughout Minnesota, delivering lectures in churches, and writing pamphlets, on the perils of a federal education law known as School to Work, which supported vocational training, and a Minnesota education law known as Profile of Learning, which set state education standards. In one pamphlet, she wrote that federal education law “embraces a socialist, globalist worldview; loyalty to all government and not America.” In another, she warned of a “new restructuring of American society,” beginning with “workforce boards” that would tell every student the specific career options he or she could pursue, turning children into “human resources for a centrally planned economy.”

David Frum comments on this phase of Bachmann’s development:

This kind of talk would sound paranoid to most of us. It emerges from a religious philosophy that rejects the federal government as an alien instrument of destruction, ripping apart a Christian society. Bachmann’s religiously grounded rejection of the American state finds a hearing with many more conventional conservatives radicalized by today’s hard economic times.

When Bachmann is asked what principle motivates her, her answer is ”liberty”. But Lizza notes dryly, ”It is a peculiarity of the current political moment that a politician with a history of pushing sectarian religious beliefs in government has become a hero to a libertarian movement.”

Thinking over the above, it’s helpful to distinguish two strands of American libertarianism. The first is the kind we think of with Ron Paul or Reason magazine. This view believes in the power of a free individual’s reason to improve life, and it is plausibly anti-authoritarian (although arguably, it has its own authorities and ways of being absolute). The second libertarianism has to do with freedom from the federal government. This is not necessarily because you dislike authority. You might just view the federal government as a rival authority to the authority you want. With this second kind of libertarianism, “states rights” comes to mind, and also the religious homeschool movement.

Michele Bachmann has this second view in spades. Not only is she a staunch disciple of Schaeffer and Pearcey, but also John Eidsmoe (who told an interviewer “it was the state [of Alabama's] ‘constitutional right to secede,’ and that ‘Jefferson Davis and John C. Calhoun understood the Constitution better than did Abraham Lincoln…’”), and also J. Steven Wilkins (“the leading proponent of the theory that the South was an orthodox Christian nation unjustly attacked by the godless North”), and David A. Noebel (a homeschooling activist and “longtime John Birch society member whose pamphlets include… ‘Communism, Hypnotism, and the Beatles.’”)

So while the first type of libertarianism at least has a classical liberal’s respect for reason and shared facts, Bachmann’s style of libertarianism seems much more Manichean, and paradoxically authoritarian (where a particular “moral” authority is very strong. Maybe calling it libertarianism is a stretch). If we’re going to talk to a Michele Bachmann about just about any national policy, particularly science-related policy, right out of the gate reason and shared facts are going to have a hard time.


Attacks on Climate Science in Schools Are Mounting | The Intersection

My latest DeSmog piece is about the classroom climate for climate science teaching–and how poisonous it is getting. It starts like this:

A few months back, those who care about accurate climate science and energy education in high school classes registered a minor victory. Under fire from outlets like The New York Times, the education publishing behemoth Scholastic (of Clifford the Big Red Dog and Harry Potter fame) pulled an energy curriculum sponsored by the American Coal Foundation, which gave a nice PR sheen to coal without bothering to cover, uh, the whole environmental angle. The curriculum had reportedly already been mailed to 66,000 classrooms by the time it got yanked.

When it comes to undermining accurate and responsible climate and energy education at the high school level, Scholastic may have been the most prominent transgressor. But precisely because it is a massive and respected educational publisher, and actually careswhat The New York Times thinks, it was also the most moderate and easy to reason with.

Although it’s hard to find online now, I’ve reviewed the offending coal curriculum, entitled “The United States of Energy.” In my view, it didn’t even contain any obvious falsehoods—except for errors of omission. It was more a case of subtle greenwashing.

What’s currently seeping into classrooms across the country is far, far worse—more ideological, and more difficult to stop. We’re talking about outright climate denial being fed to students—and accurate climate science teaching being attacked by aggressive Tea Party-style ideologues.

You can read on here….


Next Batch of NASA Artifacts Available Next Week

NASA Unveils New Batch Of Space Shuttle Program Artifacts, NASA

"The artifacts are not only from the shuttle era, but also from the Apollo, Mercury, Hubble Space Telescope programs. The approximately 2,000 items include: -- the Scott Carpenter Space Analog Station, an underwater habitat that was used to demonstrate space life support system ideas for use on space stations -- shuttle heat shield tiles used to test problems experienced during missions -- parts of Apollo and shuttle era spacesuits, including hard upper torso garments to protect astronauts from extreme temperatures."

Marc's Note: You can also purchase your very own Shuttle Training Aircraft (STA).