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Monthly Archives: June 2017
Bear of the Day: CF Industries (CF) – Zacks.com
Posted: June 24, 2017 at 2:23 pm
Global surpluses in your core competency dampens growth levels, and puts pressure on a companys pricing power as well. This is the situation facing our Zacks Bear of the Day, CF Industries (CF - Free Report) who is dealing with global nitrogen supply surpluses due high stockpiles of the commodity in China, India, and Pakistan. Further, this supply glut is not expected to be reduced as a wetter and colder than expected spring has delayed ammonia applications in the Midwest United States.
This Zacks Ranked #5 (Strong Sell) is the holding company for the operations of CF Industries, Inc. CF Industries, Inc. is a major producer and distributor of nitrogen and phosphate fertilizer products. CF Industries operates world-scale nitrogen fertilizer plants in Louisiana and Alberta, Canada; conducts phosphate mining and manufacturing operations in Central Florida; and distributes fertilizer products through a system of terminals, warehouses, and associated transportation equipment located primarily in the Midwestern United States.
Recent Earnings Data
In early May, CF announced Q1 17 earnings where they missed the Zacks consensus earnings estimate, but beat the Zacks consensus revenue estimate. On a year over year basis, the company saw several negative trends; cost of sales increased by +18.3%, gross margins fell -11.4%, Net earnings declined from +$26 million to a net loss of $23 million, and adjusted net earnings per diluted share diminished from $0.43 to $0.05.
Price and Earnings Consensus Graph
Due to the lack of pricing power, and increased cost of sales, the stock price and future earnings estimates have been declining for quite some time.
CF Industries Holdings, Inc. Price and Consensus | CF Industries Holdings, Inc. Quote
Declining Earnings Estimates
Over the past 60 days, earnings estimates for Q2 17, Q3 17, FY 17 and FY 18 have all seen significant downgrades; Q2 17 fell from $0.23 to $0.02, Q3 17 dropped from -$0.10 to -$0.31, FY 17 plummeted from $0.25 to $-0.37, and FY 18 was cut by more than half as it fell from $0.90 to $0.39.
Bottom Line
Unfortunately, this global surplus is not expected to decline in the near term which will make the next quarter or two a bit challenging for CF Industries.
If you are inclined to invest the Basic Materials-Fertilizers segment you would be best served by looking into either Potash Corp (POT - Free Report) who currently carries a Zacks Rank #1 (Strong Buy), and or Sociedad Quimica Minera (SQM - Free Report) who currently has a Zacks Rank of #2 (Buy).
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There is always a cost for political correctness – Wahpeton Daily News
Posted: at 2:22 pm
Its a miracle I survived my childhood. I wonder how my parents could have been so neglectful and this exactly one week after we celebrated Fathers Day. Gasp. Roll eyes. Tsk. Tsk.
After reading the Dakota Estates news this week, one thing became abundantly clear Dakota Estates cares more for its residents than my parents did for their children. Dakota Estates residents played lawn darts, not to be confused with the lawn jarts we often played when I was a child. Seriously, any excuse my dad could manufacture, he pulled out the lawn jarts. Now I wonder if he was just trying to kill off a child. He had five of us. Wonder which one was expendable? Im betting on the youngest, my brother Tom.
Lawn darts are caricatured versions of a plastic bomb, while lawn jarts could never be mistaken for anything else, not with the sharp metal tip on one end so the jart could sink deep into the earth. Lawn jarts was fun, an evil form of horse shoes.
We played lawn jarts all the time, and lived to tell the tale. No one was injured or maimed. Not even a little scratch. I remember those deadly tournaments with fondness.
It was fun, during an era that posed other obvious safety hazards as children routinely drank from the hose. I remember eating carrots straight out of the vegetable garden without thought to pesticides or dirt. We didnt use Clorox wipes every 15 minutes in case an itinerant germ suddenly sprang out of the air with the speed of a President Trump tweet.
I survived childhood and rarely visited my childhood pediatrician Dr. Dooley, unless it was for stitches that resulted from a dare. I had a lot of stitches in my youth since recklessness and being foolhardy often walk hand-in-hand.
On one hand, I can appreciate that lawn darts are safer, but on the other, I dont like the way they bounce when tossed. Lawn jarts stuck, unless you missed and they skittered across the grass. I understand theres less likelihood of death when playing lawn darts, but I really do miss lawn jarts. Political correctness has its place in the world, but there is always a cost.
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There is always a cost for political correctness - Wahpeton Daily News
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What is the meaning of eugenics? Definition and history of the … – The Sun
Posted: at 2:22 pm
The 'science' is now associated with the horrors of Nazi Germany but was once popular throughout the world
EUGENICS is a movement now associated with the crimes against humanity committed by the Nazis during Hitlers rule over Germany.
Heres what you need to know about the now-discredited science which actually began in Britain and was once popular throughout the world.
Public Library/News Dog Media
The Oxford English Dictionary describes Eugenics as: The science of improving a population by controlled breeding to increase the occurrence of desirable heritable characteristics.
The term was first coined by British explorer and natural scientist Sir Francis Galton in 1883.
The debunked science was once practiced the world over before it was widely discredited, following its use by the Nazis to justify their atrocities in trying to create a master race.
Public Library/News Dog Media
Proponents of eugenics claimed undesirable genetic traits like dwarfism, deafness and even minor defects like a cleft palate could and should be eliminated from the gene pool through selective breeding.
Scientists would measure the skulls of criminals as they sought to identify a genetic trait that caused people to offend so they would wipe that group out.
Others suggested simply eradicating entire groups of people because of the colour of their skin.
The first sterilisation law which stopped certain categories of disabled people from having children was passed in Indiana, USA, in 1907.
This was 26 years before a similar law was introduced by the Nazis in Germany in 1933.
In fact, Nazi propaganda pointed to the precedent set by America as Hitler sought to justify his own sterilisation programme.
Public Library/News Dog Media
In the decades following Charles Darwins 1859 publication of On the Origin of Species, the craze like wildfire spread through Britain, the United States and Europe.
Galton Darwins cousin who coined the name eugenics became obsessed with his relatives theory of evolution.
He believed breeding humans with superior mental and physical traits could help the human race evolve in a better way and was essential to the well-being of society.
He wrote: Eugenics is the science which deals with all influences which improve the inborn qualities of a race; also with those which develop them to the utmost advantage.
Galton was knighted for his scientific contributions and his writings played a key role in launching the eugenics movement in the UK and US.
Public Library/News Dog Media
Shocking photos from the time show the harrowing lengths scientists went to in the heyday of the eugenics movement to selectively breed humans.
In 1907, the Eugenics Education Society was founded in Britain to campaign for sterilisation and marriage restrictions for the weak to prevent the degeneration of Britains population.
A year later, Sir James Crichton-Brown, giving evidence before the 1908 Royal Commission on the Care and Control of the Feeble-Minded, recommended the compulsory sterilisation of those with learning disabilities and mental illness.
And in 1931, Labour MP Archibald Church proposed a bill for the compulsory sterilisation of certain categories of mental patient in Parliament.
Although such a law was never actually passed in Britain, this did not prevent many sterilisations being carried out under various forms of coercion.
Meanwhile from 1907 in the US, men, women and children who were deemed insane, idiotic, imbecile, feebleminded or epileptic were forcibly sterilised often without being informed of what was being done to them.
By 1938, 33 American states permitted the forced sterilisation of women with learning disabilities.
And 29 American states had passed compulsory sterilisation laws covering people who were thought to have genetic conditions.
Laws in America also restricted the right of certain disabled people to marry.
But sometimes it went even further, with one mental institution in Illinois, USA, euthanising patients by deliberately infecting them with tuberculosis an act they justified as a mercy killing that cut the weak link in the human race.
Other countries which passed similar sterilisation laws in the 1920s and 1930s included Sweden, Denmark, Norway and Finland.
After these kinds of ideas took root in Nazi Germany and sparked the horrors of the Holocaust, eugenics became a dirty word.
With the dark conclusion of its philosophy exposed before the world, it became difficult to justify forced sterilisation as a tool for the greater good.
All eugenics-based laws were eventually repealed in the 1940s.
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What is the meaning of eugenics? Definition and history of the ... - The Sun
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Building the ‘perfect’ GMO baby – Metro US
Posted: at 2:22 pm
Many people shun GMOs food that has been genetically modified but what about GMO babies?
A recent survey asked 500 American and 500 European parents or those who planned to be parents some day if they would genetically alter their offspring and how much money they would pay for the perfect child.
The idea might seem unsavory to some eugenics will forever be linked to Hitler and his crazed mission to create a master race but this sort of technology isnt too far off, considering that science has mastered cloning animals.
Cloning humans successfully became less of a dream (nightmare, to some) after science figured out how to clone a human embryo to make stem cells.
If given the chance, would you alter your babys DNA to make him or her smarter, stronger or blue-eyed? Of those who believe genetically designing a child would be unethical, one out of five admitted they would still modify the baby for intelligence while a third would give their childs DNA a boost to ensure good health.
Those who believe genetic alterations are morally acceptable also called intelligence and health priorities, with 28 percent voting for an active mind, and 27 percent voting for an active immune system.
Both groups would also modify creativity and weight; 7 percent of participants with ethical concerns voted for kindness while 8 percent of those without qualms voted to make their child more attractive.
Half of the men and half of the women agreed that intelligence is a trait they would alter, and they also agreed on the importance of creativity and kindness.
Moms and dads differed when it came to other traits: One in 10 men ranked courage in their top five preferred traits while women voted for independence and charisma.
Maybe moms are hoping for their child to become POTUS. If Kanye wins 2020, lets all just agree anything is possible.
Around one in four potential moms and dads were willing to alter things like attractiveness and weight (because pizza is amazing and counting calories is the worst, right?).
Men wanted their kids to be like Mike and know like Bo knows with increased strength and athleticism, while moms preferred to dictate eye color.
Americans and their friends across the pond agreed bigly on the importance of intelligence, followed by creativity, but when given a list of changeable traits, Americans placed more importance on independence while Europeans opted for courage. Considering both cultures, those choices make sense; Americans value independence while Europeans are in closer proximity to other cultures and might need to call upon courage to learn and engage.
Regardless of continent, a quarter of those surveyed said they would opt to alter attractiveness and weight. Americans were more concerned about athletic ability than their European counterparts.
Men, and Americans in general, were willing to shell out quite a few clams for a smarter baby; one in four were willing to drop around $10,000 for a kid who does better in school.
Women and Europeans went Jimmy McMillian (the rent is too damn high) and were only willing to fork over between $1,000 and $2,000.
More than a third of all men and women surveyed agreed a health upgrade would be worth $10,000 or more.
Europeans prefer blond-haired, blue-eyed girls over boys; Americans choose dark-haired, blue-eyed boys. Women, regardless of country of origin, in general favored girls with blue eyes and black hair while men favored blond hair and blue eyes for their above-average-height son.
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Puppies cloned from ears arrive in Russia for genetic research … – RT
Posted: at 2:21 pm
Published time: 24 Jun, 2017 08:49 Edited time: 24 Jun, 2017 10:16
Lab-produced dogs cloned from bio material taken from the two best representatives of the Yakutian Laika species have arrived in Russia from South Korea for genetic research. One met its original mother as a Ruptly crew filmed the moment.
The puppies, which were cloned by South Koreas Sooam Biotech Research Foundation, one of the worlds leading dog cloning laboratories, arrived in Yakutsk, the capital of Siberias Yakutia Republic, on Friday. The research was led by Dr. Hwang Woo Suk and his team.
The scientists succeeded in cloning the Yakutian Laikas, a type of hunting dog from Northern Russia and Russian Siberia, from a 12-year-old male and a 6-year-old female.
One of cloned puppies is a two-month-old girl named Kyrachana, which means beautiful in the Yakutian language. Another is a 3-month-old boy named Belekh, which means present.
Ruptly visited the farm where Kyrachana is now living when she met her original mother for the first time.
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I cant really believe that it [the puppy] is a clone. If you look at the original, you can see that they both look alike,the dogs owner Dmitry said, adding that the puppy had been cloned from a part of the mother dogs ear.
The collaboration with the South Korean scientific laboratory is aimed at saving the original Yukutian Laika breed, whose population has seen drastic decline over past decades due to cross-breeding.
The canines were cloned in the Sooam Biotech Research Foundation, which is focused on advanced biotechnology for industrial and biomedical applications using animal cloning and pluripotent stem cells combined with transgenic technology, the companys website says.
However, not all of the cloned dogs are pets. The laboratory has replicated the best military and police dogs to assist the South Korean police, and many cloned dogs currently work in police forces in the US and China.
In November of 2016, the company sent three cloned Belgian Malinois to join police forces in Yakutsk.
Animal cloning is not allowed everywhere in the world. In 2015, the EU Parliament banned the cloning of animals, as well as importing their descendants.
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Turkey to stop teaching evolution in high school – CNN
Posted: at 2:21 pm
The subject has been cut from the curriculum under changes made to eliminate "controversial" topics, the head of the national board of education, Alpaslan Durmus, announced in a video address.
"If our students don't have the background, the scientific knowledge, or information to comprehend the debate around controversial issues, we have left them out," Durmus said.
The new curriculum will go into effect for the 2017- 2018 school year.
It was crafted to emphasize national values and highlight contributions made by Turkish and Muslim scholars, Durmus said.
History classes will look beyond "Eurocentrism" and music classes will focus on "all colors of Turkish music," he said.
Critics view the changes in the education system as another step in the ruling Justice and Development Party's ambitions to make Turkey more conservative. Erdogan has been vocal about wanting to raise "a pious generation."
The argument that evolution is too difficult for ninth-graders to comprehend is not a reasonable explanation for removing the unit from high schools, according to Ebru Yigit, a board member of the secular education union Egitim-Sen.
"The curriculum change in its entirety is taking the education system away from scientific reasoning and changing it into a dogmatic religious system," Yigit said in a phone interview with CNN. "The elimination of the evolution unit from classes is the most concrete example of this."
Darwin's theory of evolution has been at the center of the Turkish culture wars over the last decade.
The controversy is based in a conservative and hard-line approach to the scientific theory that equates evolution with atheism, according to Mustafa Akyol a fellow at the Freedom Project at Wellesley College in Massachusetts.
But the theory in its most basic form doesn't have to pose a problem for Muslims, he said.
"There are various progressive theologians in Turkey who argue that evolution is the way God created life via natural means," Akyol said.
The decision to eliminate evolution from the curriculum "implies that more conservative, parochial and anti-intellectual Islamic views are more ascendant," he said.
Eliminating evolution from high schools takes information away from students and reveals a worrying trend of getting rid of anything that challenges tradition, he said.
"They could have been still conservative, but also wise," Akyol said. "The students could have been informed, rather than uninformed."
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Courtney Kemp of ‘Power’ on Shakespeare and Ghost’s Evolution – New York Times
Posted: at 2:21 pm
Ghost isnt exactly a saint. Still, many probably didnt expect his past to catch up to him via his ex-girlfriend and federal prosector, Angela, for a crime he didnt commit.
At the end of the pilot episode, we promised that someday he would get arrested and she would do it. So its more of why did we do it now? Its really about me as a writer wanting to write myself into a corner to see if I could write my way out. I really try to plot in a fearless fashion. I try not to care about not knowing the answer before I get there, I just jump in first and see what happens.
Were you able to get out of the corner?
We got way better stuff by doing it this way, because we forced ourselves to look at the characters more closely. We forced the characters to look at the characters more closely. Self-discovery is a universal quest, so immediately the characters are more relatable.
Youve said that Ghosts character is based on your father and Curtis Jackson (a.k.a. 50 Cent), one of the shows executive producers. As his character has evolved over the series, who is Ghost based on now?
I steal some pieces of Omari. Ghosts commitment to his family is very much Omari. I think all the characters are me to some extent.
How so, as it relates to Ghost?
This is going to sound a little strange, but I think theres a large part of being a working mom that I put into Ghost, which is that youre never in the right place at the right time. We show Ghost in a lot of situations where he really shouldve been elsewhere. When Im at work, I want to be with my daughter and when Im with my daughter, I probably should be working and it just is what it is.
As the show and characters have evolved, how are you approaching your role as a showrunner?
My approach to plotting, storytelling and writing hasnt changed. I definitely have the writer of the episode on set, but I probably should delegate more.
I dont hire anyone for my assistant job or any low-level writer job in the writers office who isnt an aspiring writer. A lot of people will say that they want to be my assistant, because they want to be an actor on the show and Im not interested in that. I definitely want to hire people who want to know how to make TV, you know what I mean? Im in a unique position to be able to teach you how to do that.
I try to spend as much time in Los Angeles as I can throughout the year and less time in New York on the set, just because my daughter is getting older.
What are some references youve used to frame the storytelling on the show and move the characters and narratives forward?
A lot of Shakespeare. Ive used Richard III because hes ruthless in getting what he wants and then ghosts of the people he killed start haunting him. I think thats very much Ghost.
You recently signed a multiyear deal with Starz and Lionsgate (which bought the network last year). What kind of projects are you looking to produce?
Im hoping to develop more television shows with people of color and women in front of and behind the camera. I want to tell some more personal stories. I want to tell more stories about lying, dual lives, self-deception those are my favorites.
When youre not working on Power, what are you watching?
Ru Pauls Drag Race, Im a long-term fan. Master of Nones season was amazing. I love Archer, thats one of the best-written shows out there.
A version of this article appears in print on June 24, 2017, on Page C4 of the New York edition with the headline: Shes Keeping a Promise on Power.
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Courtney Kemp of 'Power' on Shakespeare and Ghost's Evolution - New York Times
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Food Evolution is correct on GMOs, and unconvincing. – Slate Magazine
Posted: at 2:21 pm
A scene from Food Evolution.
Black Valley Films
Several years ago, a county government in Hawaii debated a measure to ban genetically modified crops on the island. The hearings highlighted the divergent views of pro-GMO scientists and anti-biotech activists, many who assert, without credible evidence, that GMOs are linked to numerous diseases.
Those deliberations, contentious as they were, eventually became the focus of a long narrative feature by Pulitzer Prizewinning New York Times journalist Amy Harmon, titled A Lonely Quest for Facts on Genetically Modified Crops. The piece revealed the fraught and bewildering discourse around GMOs and why, even if you took the time to painstakingly verify all the claims and counter-claims (as one lonely councilman did), most people arent interested in listening or changing their minds based on the evidence. Its too much of a slog, and it goes against the very human tendency to accept only information that confirms pre-existing beliefs or mindsets. The majority of councilmembers voted for the GMO ban, an outcome, that as Harmons article shows, was likely preordainedand also nonsensical when considering the evidence.
For those seeking clarity on GMOs, the push to get people to accept the facts is just as lonely now as it was in 2014: The Hawaii case also serves as the dramatic centerpiece of an ambitious new documentary called Food Evolution, opening in select movie theaters this week. Food Evolution travels to major battlegrounds to better understand the GMO conflict, from Hawaii and New York to California and Africa. It is abundantly clear that the film, like any good documentary, is argument-driven, attempting to prove that GMOs, far from how theyve been painted, are in fact safe.
Unfortunately, theres no good reason to think this effort will be any more successful at correcting the popular misperceptions and stereotypes around GMOs than Harmons thoughtful piece (or several others since, including, for example, one in this very magazine). The film, like any good documentary, wants to be the arbiter of a debate over evidence. In reality, it ought to have admitted that what it is facing is an ideologically charged debate that, like climate change, is increasingly immune to facts.
Food Evolution leans heavily on science and scientific authority to make its argument. Exhibit A: Neil DeGrasse Tyson is the films narrator. To dispel unfounded but persistent health fears of GMOs, Tyson points to the nearly 2,000 experiments and foremost scientific institutions that have affirmed the safety of genetically engineered foods. Will this change anyones mind?
As we say in Brooklyn, fughetaboutit. Im skeptical that the film will have any impact on GMO-averse people because I know GMO-averse people. I belong to this tribe. My GMO-averse friends and fellow brownstone liberals havent given a lot of thought to the science that suggests GMOs are safe. Theyre not going to wade through dense National Academy of Sciences reports that provide nuanced discussions on the pros and cons of genetically modified crops. For them, the GMO debate is not about science; it is about emotions. They very much care about the food they feed their families. And they take their cues from the experts they trust on such matters, experts they judge to share their values. And in this tribe, GMOs are not associated with sustainability and healthy foods.
Im skeptical that the film will have any impact on GMO-averse people because I know GMO-averse people.
Maybe this explains why, despite embracing GMO foods myself, I also belong to my local organic co-op, something one friend gleefully reminded me of the last time I brought up misguided GMO fears at a dinner party. Yes, theres a large GMO-free sign hanging on the main wall in the co-op, but I like the vibe and ethic of the place. And yeah, I know the lucrative organic food industry is a racket unto itself and that organic benefits are grossly overstated, but I still identify with the people who shop at the co-op. And that matters more to me.
When the topic of GMOs comes up at dinner parties, I am the skunk who will gently remind everyone of everything Tyson says about GMO safety in Food Evolution. I have a litany of facts and studies that I cite. After listening politely and patting me on the head like a child out of his depth, they always checkmate me with, What about Monsanto?
Its hard to overstate the significance of that albatross on the GMO debate. Monsanto is perhaps best known for producing pesticides and herbicides like DDT in the 1940s and Agent Orange during the Vietnam War. In the 1980s, Monsanto was at the forefront of the nascent agricultural biotechnology revolution, but when it pioneered the first generation of genetically engineered seeds, it conveniently made them able to withstand an herbicide it created. Activists suspicious of the new technology had a field day branding GMOs as the work of mad scientists with a history of poisoning us. Its easy for activists to portray the company as the evil face of industrial agriculture.
Of course, the reality is that it is possible for Monsanto to be terrible and for GMOs to still be safe. But when Ive tried unpacking the companys real problems (calling out its monopolistic, heavy-handed business practices and tone-deaf responses to critics), that only makes people more suspicious. Its become hard for scientists and journalists alike to debunk GMO myths and misinformation without being accused of shilling for Monsanto or Big Ag. Even Harmon, a highly regarded science journalist, cant escape this charge: After one of her (ultimately prize-winning) pieces chronicling a non-industry application of crop biotechnology was published, Michael Pollan tweeted that it contained too many industry talking points. (The science journalism community leapt to Harmons defense and repudiated Pollan.) And after Harmons Hawaii piece was published, an anti-GMO group on its Facebook page photo-shopped her in a leopard-skin bathing suit, holding hands with the Monsanto CEO on a Hawaiian beach.
Given this poisonous milieu, Im not surprised that Food Evolution has already been characterized by activists as a textbook case of corporate propaganda. Several influential GMO critics who appear in the film, including Pollan and New York University professor Marion Nestle, are also crying foul. Its fair to say that the film has an agenda. It does. (Though, to its credit, Food Evolution devotes ample time to the socio-political concerns of GMO opponents.) But to baselessly insinuate that Monsanto has somehow financially underwritten it, as Nestle does in a blog post on her website, is a pretty good indicator of Food Evolutions herculean challenge: to overcome immense distrust of a science dominated and shaped by industry.
There is one scene that left me hopeful that it is possible for a meeting of the minds on this topic. It comes when Alison Van Eenennaam, a professor of animal genomics and biotechnology at the University of CaliforniaDavis, stops to talk with anti-GMO protesters. She engages in a civil, good faith conversation with them. One protester says to her: Dont you think putting all these chemicals in our food and in our animals is dangerous?
After some polite back and forth, Van Eenennaam says, What frustrates me is that I think this [GMO] technology has potential and yet it gets mixed up with a lot of other concerns, like multinational control. The protester seems truly engaged in their dialogue. Maybe its not an and/or [issue], she says.
Van Eenennaam reaches out to shake the womans hand. I agree, she says, smiling. Can we agree on that?
They do. It would be great if more conversations like this resulted from Food Evolution. But the film is an attempt to inject science into a debate that is shaped by values. That tactic, one that I have employed plenty of times in my own life with minimal results, seems destined to fail. Instead, perhaps we should all take a page from Van Eenennaam and try to be more willing to listen to how peoples values inform their opinions and find common ground from there.
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Food Evolution is correct on GMOs, and unconvincing. - Slate Magazine
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In marine bacteria, evolution of new specialized molecules follows a … – Phys.Org
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June 23, 2017 by David L. Chandler Researchers have discovered that Prochlorococcus varieties can each produce more than two dozen different peptides (molecules that are similar to proteins, but smaller). Credit: Christine Daniloff/MIT
It's one of the tiniest organisms on Earth, but also one of the most abundant. And now, the microscopic marine bacteria called Prochlorococcus can add one more superlative to its list of attributes: It evolves new kinds of metabolites called lanthipeptides, more abundantly and rapidly than any other known organism.
While most bacteria contain genes to pump out one or two versions of this peptide, Prochlorococcus varieties can each produce more than two dozen different peptides (molecules that are similar to proteins, but smaller). And though all of Earth's Prochlorococcus varieties belong to just a single species, some of their localized varieties in different regions of the world's oceans each produce a unique collection of thousands of these peptides, unlike those generated by terrestrial bacteria.
The startling findings, published this week in the journal Proceedings of the National Academy of Science, were discovered by former MIT graduate student Andres Cubillos-Ruiz, Institute Professor Sallie "Penny" Chisholm, University of Illinois chemistry professor Wilfred van der Donk, and two others.
"This is incredibly significant work," says Eric Schmidt, professor of medicinal chemistry at the University of Utah, who was not involved in the research. "The authors show how nature has evolved methods to create chemical diversity. What really sets it apart is that it examines how this evolution takes place in nature, instead of in the lab. They examine a huge habitat, the open ocean. This is amazing," he says.
"No one had seen the true extent of the diversity in these molecules" until this new study, Cubillos-Ruiz says. The first hints of this unexpected diversity surfaced in 2010, when Bo Li and Daniel Sher, members of van der Donk's and Chisholm's labs respectively, found that one variety of Prochlorococcus could produce as many as 29 different lanthipeptides. But the big surprise came when Cubillos-Ruiz looked at other populations and found that the same organisms, in a different location, produced similarly great numbers of the peptides, "and all of them were completely different," he says.
After considerable study examining the genomes of many Prochlorococcus cultures and pieces of DNA from the wild, the researchers determined that the way the extraordinary numbers of lanthipeptides evolve is, in itself, something that hasn't been observed before. While most evolution takes place through tiny incremental changes, while preserving the vast majority of the genetic structure, the genes that enable Prochlorococcus to produce these lanthipeptides do just the opposite. They somehow undergo dramatic, wholesale changes all at once, resulting in the production of thousands of new varieties of these metabolites.
Cubillos-Ruiz, who is now a postdoc at MIT's Institute For Medical Engineering and Science, says the way these genes were changing "wasn't following classic phylogenetic rules," which dictate that changes should happen slowly and incrementally to avoid disruptive changes that impair function. But the story is a bit more complicated than that: The specific genes that encode for these lanthipeptides are composed of two parts, joined end to end. One part is actually very well-preserved across the lineages and different populations of the species. It's the other end that goes through these major shakeups in structure. "The second half is amazingly variable," he says. "The two halves of the gene have taken completely different evolutionary pathways, which is uncommon."
The actual functions of most of these thousands of peptides, which are known as prochlorosins, remain unknown, as they are very difficult to study under laboratory conditions. Similar compounds produced by terrestrial bacteria can serve as chemical signaling devices between the organisms, while others are known to have antimicrobial functions, and many others serve purposes that have yet to be determined. Because of the known antimicrobial functions, though, the team thinks it will be useful to screen these compounds to see if they might be candidates for new antibiotics or other useful biologic products.
This evolutionary mechanism in Prochlorococcus represents "an intriguing mode of evolution for this kind of specialized metabolite," Cubillos-Ruiz says. While evolution usually favors preservation of most of the genetic structure from the ancestor to the descendants, "in this organism, selection seems to favor cells that are able to produce many and very different lanthipeptides. So this built-in collective diversity appears to be part of its function, but we don't yet know its purpose. We can speculate, but given their variability it's hard to demonstrate." Maybe it has to do with providing protection against attack by viruses, he says, or maybe it involves communicating with other bacteria.
"Prochlorococcus is trying to tell us something, but we don't yet know what that is," says Chisholm, who has joint appointments in MIT's departments of Civil and Environmental Engineering and Biology. "What [Cubillos-Ruiz] uncovered through this molecule is an evolutionary mechanism for diversity." And that diversity clearly must have very important survival value, she says: "It's such a small organism, with such a small genome, devoting so much of its genetic potential toward producing these molecules must mean they are playing an important role. The big question is: What is that role?"
In fact, this kind of process may not be uniqueit may be just that Prochlorococcus, an organism that Chisholm and her colleagues initially discovered in 1986 and have been studying ever since, has provided the wealth of data needed for such an analysis. "This might be happening in other kinds of bacteria," Cubillos-Ruiz says, "so maybe if people start looking into other environments for that kind of diversity," it may turn out not to be unique. "There are some hints it happens in other [biological] systems too," he says.
Christopher Walsh, emeritus professor of biological chemistry and molecular pharmacology at Harvard University, who was not involved in this work, says "The dramatic diversity of prochlorosins assembled by a single enzyme raises surprising questions about how evolution of thousands of cyclic peptide structures can be accomplished by alterations that favor large changes rather than incremental ones."
According to Schmidt, "There are many possible practical applications. The first is fairly clear: By using this natural variation, the same process can be used to design and build chemicals that might be drugs or other materials. More fundamentally, by understanding the natural process of generating chemical diversity, this will help to create methods to synthesize desired applications in cells."
Explore further: Ubiquitous marine organism co-evolved with other microbes, promoting more complex ecosystems
More information: Evolutionary radiation of lanthipeptides in marine cyanobacteria, Proceedings of the National Academy of Science (2017). http://www.pnas.org/cgi/doi/10.1073/pnas.1700990114
This story is republished courtesy of MIT News (web.mit.edu/newsoffice/), a popular site that covers news about MIT research, innovation and teaching.
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Evolution, revolution, smevolution: The future of classical music – Los Angeles Times
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Classical music may be the art of the sublime, liquid architecture and all the rest, but it has nonetheless always been a long-suffering kingdom of kvetching. Born to serve the church, Western music became in the Middle Ages an ideal medium of sacrilege, and the art form has continued over the centuries to bite the hands that have fed it, be they the aristocracy, ruling powers, philanthropists or the public. However high-minded, the history of classical music is riddled with worry and an obsessive desire for reinvention.
Music Academy of the West the summer training program for young musicians on an elegant campus nestled among Montecito mansions and overlooking a scenic stretch of shoreline held a two-day conference this week called Classical Evolution/Revolution. Eighteen movers and shakers, young and seasoned, working in Los Angeles, the Bay Area, New York and London, took part in six panels surveying the state of the field.
The curriculum for such symposiums is expected to ask all the pressing questions. What horrors will disruptive digital unleash next? How can we develop new audiences without teaching music in schools? Can classical music, that sliver of a sliver of the modern zeitgeist, possibly matter? Where, everyone in the business desperately wants to know, will the next dollar come from?
If anyone should be anxious, its Graham Parker. Last July he was appointed president of the U.S. division of Universal Music Classics, which includes such fabled classical record labels as Deutsche Grammophon and Decca. The classical market has long been expected to die on the vine. Classical buyers still want CDs but cant readily find them. To top the charts, a new classical release once needed to sell tens of thousands. Now a few hundred units makes for a coveted bestseller.
But that doesnt mean the classical music baby need be thrown out with the the CD bathwater. A cheerfully upbeat Parker ended the conference raising eyebrows with the claim that in any given month an extraordinary 30% of the U.S. population listens to classical music on some device. That translates to 100 million people in our country alone! Another happy number he threw out is that more than 40 million Americans sing in a chorus (an estimate that includes church choirs).
Of course, how you best reach these millions is another matter. There are also millions more who dont know what they are missing. Classical music might just supply the spiritual nourishment they seek.
Technology is ever the elephant in the room. The history of sharks out to cheat musicians is long and dishonorable. Today its Silicon Valleys ability to redirect profits from the creators and producers to the likes of Apple, Amazon and Spotify. Equally troubling is the power of technology in the form of virtual reality, holograms and things we may not yet know about, to suck the life out of live music making.
Again, such dire predictions are nothing new in classical music. And yet so much classical has been around for so long that it would be hard to get rid of it all. Live performance has lasted, furthermore, because, as Los Angeles Opera head Christopher Koelsch said Tuesday, The human creature craves the communal.
For his part, Sam Bodkin asked what the world needs and rapidly answered his own question: It needs more substance, beauty and intimacy, and classical music checks all those boxes.
So Bodkin founded Groupmuse, which uses social media to build audiences for intimate concerts in homes, breaking down the barrier between listener and performer. People are looking to go places they cant find in contemporary commercial society, he said. Beethoven in your living room or grungy basement as far as Bodkin is concerned, any place can provide a newbies aha moment.
What is maybe new to our time is the necessity for everyone the creators, the practitioners, the producers and the audience to become determinedly flexible. The ways to make and consume classical music keep expanding. The technological wonders of the modern world take, but they also give. It is not just good but essential to be adaptable and open. And wary.
The idea of putting faith in the artists was another central point. Luke Ritchie and Toby Coffey, who respectively head digital innovation and development departments for the Philharmonia Orchestra and the neighboring National Theatre at the Southbank Centre in London, are working at the cutting edge of virtual reality and did a fairly convincing job of making that seem a less scary reality. Both demonstrated concern with enhancing content and disdain for digital trickery.
Ritchie has the advantage of the orchestras tech-savvy principal conductor and artistic advisor Esa-Pekka Salonen. He takes viewers hooked up to those clumsy VR masks on an illuminating tour of the orchestra that you really could never get any other way. The National Theatre is more radical, with its immersive storytelling. An audience member can wear VR goggles that create a 360-degree spatial environment that feels completely interior and dreamlike, and at the same time interact with live actors, resulting in intense situations, where the theatrical confusion between reality and dream state weaken emotional defenses. The implication for opera is terrifying and thrilling.
However encouraging the fact that artists may have a chance to help mold VR technology, which is still in its infancy, that is a future as yet out of reach. And it is coming up against what is a much bigger trend of reviving, as Bodkin is doing, the physical connection between performer and audience.
The value of discovery in an audience is diminishing, lamented Kristy Edmunds, executive and artistic director of the Center for the Art of Performance at UCLA. But her solution is simply listen to and support the artist. She said that her guiding principle is something that the French director Ariane Mnouchkine once told her: For somebody in the audience, this will be their first experience with theater, and for somebody it will be their last.
One of the great contributions of Mnouchkines avant-garde company, Le Thtre du Soleil, has been the understanding of the importance of space as the place. She took over former munitions factory in eastern Paris where she could create a uniquely communal environment for a revelatory new ritualistic theater. Yuval Sharon, founder of the Los Angeles opera company the Industry, described how masterminding operas in Union Station or in limousines driving through downtown L.A. offered a unique engagement between city and artists, allowing audiences to find all kinds of unexpected resonances.
Though Sharon may be a paradigm shifter, he distinguished his approach as a director from that of a disruptor. The dictates of the work is everything, he said, and, no, Wagner should not be done in Union Station, although his next project will be the creation of a play-opera hybrid of Brechts Galileo, with music by Andy Akiho, to be staged in September around a bonfire on the beach in San Pedro.
How to improve the world without making matters worse? Would a holograph of Yuja Wang playing at Walt Disney Concert Hall broadcast to audiences in Kansas yes that was suggested provide people access to something they would not otherwise have, or would it make classical music creepy?
Few students turned up for the conference. They were busy with lessons and practicing. Their duty is to become artists we can trust. Our duty is to create a world in which they can be trusted. That is not out of the question.
The news from picture-perfect Montecito is that however great the challenges may be for classical music, the possibilities are greater. And there are a lot of people who care.
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Evolution, revolution, smevolution: The future of classical music - Los Angeles Times
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