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  • EnCambio - Estanislao Bachrach December 15, 2017
    EnCambio te va a permitir alumbrar los procesos por los cuales te comportás de determinada manera con el fin de dejar atrás aquellos hábitos y conductas que ya no te sirven. El objetivo es que aprendas del potencial que tiene tu cerebro para cambiar y la capacidad que tenés vos para modificarlo. Este año cambio de trabajo, empiezo el gimnasio, bajo esos kili […]
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  • La teoría del todo - Stephen W. Hawking December 15, 2017
    Una manera clara y amena de acercarse a los misterios del universo. En esta esclarecedora obra, el gran físico británico Stephen Hawking nos ofrece una historia del universo, del big bang a los agujeros negros. En siete pasos, Hawking logra explicar la historia del universo, desde las primeras teorías del mundo griego y de la época medieval hasta las más com […]
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  • La física del futuro - Michio Kaku December 15, 2017
    Un recorrido asombroso a través de los próximos cien años de revolución científica. El futuro ya se está inventando en los laboratorios de los científicos más punteros de todo el mundo. Con toda probabilidad, en 2100 controlaremos los ordenadores a través de diminutos sensores cerebrales y podremos mover objetos con el poder de nuestras mentes, la inteligenc […]
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  • Una mochila para el universo - Elsa Punset December 15, 2017
    ¿Cuánto debe durar un abrazo? ¿De qué sirve llorar? ¿Qué podemos hacer para cambiar nuestra suerte? ¿Tiene algún propósito el enamoramiento? ¿Y por qué es tan inevitable el desamor? ¿Cómo aprendemosa tener miedo? ¿A partir de qué edad empezamos a mentir? ¿Por qué sentimos envidia? ¿Cuántos amigos necesitamos para ser felices? ¿Podemos evitar estresarnos sin […]
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  • Ágilmente - Estanislao Bachrach December 15, 2017
    Bachrach es Doctor en biología molecular y explica el funcionamiento del cerebro. A través de ello, da consejos y herramientas para ser más creativos y felices en el trabajo y en la vida. La neurociencia es clara: el cerebro aprende hasta el último día de vida. La creatividad puede expandirse. Tu mente, mediante la aplicación de las técnicas correctas, puede […]
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  • El cisne negro. Nueva edición ampliada y revisada - Nassim Nicholas Taleb December 15, 2017
    ¿Qué es un cisne negro? Para empezar, es un suceso improbable, sus consecuencias son importantes y todas las explicaciones que se puedan ofrecer a posteriori no tienen en cuenta el azar y sólo buscan encajar lo imprevisible en un modelo perfecto. El éxito de Google y You Tube, y hasta ell 11-S, son “cisnes negros”. Para Nassim Nicholas Taleb, los cisnes negr […]
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  • Breve historia de mi vida - Stephen Hawking December 15, 2017
    La mente maravillosa de Stephen Hawking ha deslumbrado al mundo entero revelando los misterios del universo. Ahora, por primera vez, el cosmólogo más brillante de nuestra era explora, con una mirada reveladora, su propia vida y evolución intelectual. Breve historia de mi vida cuenta el sorprendente viaje de Stephen Hawking desde su niñez […]
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  • Física General Esencial - Agustín Vázquez Sánchez December 15, 2017
    La nueva edición del ebook contiene ahora ocho temas completos de física y una sección de prácticas para realizar en casa. Se han corregido errores y agregado más ejemplos y ejercicios además de recursos multimedia en todos los capítulos.  Los ejemplos resueltos se presentan paso a paso a través de una solución algebraica con lo cual se evitan errores n […]
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  • Tricks Any Dog Can Do! - Susan Day December 15, 2017
    This great book comes with advice and guidance as to the best way to teach these tricks. It offers more than one method which the reader can choose depending upon their own situation. There is also advice to using treats and shows you how to not end up with a treat junkie! This books is from the desk of Susan Day, a canine behaviourist. Susan teaches obedien […]
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  • El ladrón de cerebros - Pere Estupinyà December 15, 2017
    Una excitante radiografía de los temas más candentes de la ciencia en la actualidad. La ciencia es la aventura más apasionante que puedas emprender. En El ladrón de cerebros , Pere Estupinyà se infiltra en los principales laboratorios y centros de investigación del mundo con el objetivo de robar el conocimiento de los verdaderos héroes del siglo XXI -los cie […]
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12 natural remedies for a stomach bug

Also known as stomach flu and viral gastroenteritis … yet by any other name is just as miserable. […]

Caffeine confessions: coffee, tea or…both?

Whether it’s coffee or tea, Katherine and Margaret love their steaming mugs of deliciousness. […]

‘Bigfoot’ Samples Actually From Bears, Wolves And Furry Creatures

FILE – In this undated photo made available by Britain’s Channel 4 television of Oxford University genetics professor Bryan Sykes posing with a prepared DNA sample taken from hair from a Himalayan animal. DNA testing is taking a bite out of the Bigfoot legend. After scientists analyzed more than 30 hair samples reportedly left behind by Bigfoot and other related beasts like Yeti and almasty, they found all of them came from more mundane animals like bears, wolves, cows and raccoons. In 2012, res | Associated Press

LONDON (AP) — DNA testing is taking a bite out of the Bigfoot legend. After scientists analyzed more than 30 hair samples reportedly left behind by Bigfoot and similar mythical beasts like the Himalayan Yeti, they found all of them came from more mundane creatures like bears, wolves, cows and raccoons.

In 2012, researchers at Oxford University and the Lausanne Museum of Zoology issued an open call asking museums, scientists and Bigfoot aficionados to share any samples they thought were from the legendary ape-like creatures.

“I thought there was about a 5 percent chance of finding a sample from a Neanderthal or (a Yeti),” said Bryan Sykes of Oxford University, who led the research, the first peer-reviewed study of Bigfoot, Yeti and other “anomalous primates.”

Sykes and colleagues tested 36 hair samples from Bhutan, India, Indonesia, Nepal, Russia and the U.S. using DNA sequencing and all of them matched DNA from known animals. Most were from bears, but there were also hairs from a Malaysian tapir, horses, porcupine, deer, sheep, and a human.

While Sykes said they didn’t find any proof of Bigfoot-related creatures, he acknowledged their paper doesn’t prove they don’t exist.

“The fact that none of these samples turned out to be (a Yeti) doesn’t mean the next one won’t,” he said. The scientists did find two samples from ancient polar bears in the Himalayas, who are not known to live there. That suggests there could be a new or hybrid bear species out there, Sykes said.

Others said proving that Bigfoot is real requires significantly more than a mere hair sample.

“I would want visual or physical proof, like a body part, on top of the DNA evidence,” said Todd Disotell, a professor of anthropology at New York University. He warned Bigfoot enthusiasts not to make assumptions when they find weird things in the forest. “Every mammal in the forest leaves hair and poop behind and that’s what we’ve found,” he said. “Just not the big guy himself.”

Some experts said that if Bigfoot existed, there would be a lot more to find than just a few errant hairs.

“Those who believe in the Yeti, Bigfoot and the Loch Ness Monster need basic instruction in sex,” said Stuart Pimm, an ecologist at Duke University, in an email. “Each Yeti has two parents, four grandparents and so on,” he said. “There should have been herds of (Yetis),” he wrote. “Where were they hiding?”

___

AP Science Writer Seth Borenstein in Washington contributed to this report.

[…]

Here’s What We Know So Far About How Marijuana Affects Health

Hannah Keogh via Getty Images

By Rachael Rettner, Senior Writer
Published: 06/05/2014 02:46 PM EDT on LiveScience

Many people think that smoking pot is harmless, but there’s good evidence that the drug has at least some negative effects on health, a new review says.

Some people who smoke marijuana can become addicted, and use of the drug in the teen years has been linked with abnormalities in certain brain areas important for learning and memory, the review said. And even the immediate short-term effects of the marijuana, such as impaired thinking and coordination, can have consequences, including difficulty in learning in school and an increased risk of car accidents, the review said.

Regular marijuana smokers are also more likely than nonsmokers to have symptoms of chronic bronchitis, such as daily cough and phlegm production.

But whether the drug has long-lasting effects on cognition in adults remains controversial, with some studies suggesting the effects are persistent, and others saying the effects may be reversible, said Dr. Nora Volkow, the director of the National Institute on Drug Abuse, who wrote the review along with her colleagues. More research is needed on this topic to provide a definitive answer, she said. [Trippy Tales: The History of 8 Hallucinogens]

Legal drugs, such as alcohol and tobacco, still account for a greater burden of disease than marijuana, but this is because legal drugs are more accessible, and thus more widely used, not necessarily more dangerous, Volkow said.

“As policy shifts toward legalization of marijuana, it is reasonable and probably prudent to hypothesize that [marijuana] use will increase and that, by extension, so will the number of persons for whom there will be negative health consequence,” the researchers wrote in the June 5 issue of the New England Journal of Medicine.

Here are a few more highlights from the review:

Despite the popular belief that the marijuana is not addicting, about 9 percent of those who experiment with the drug, and up to 50 percent who use it every day, will become addicted. Smoking marijuana in the teen years is linked with brain abnormalities, such as fewer neural fibers in certain brain areas, decreased brain activity and a smaller hippocampus, an area important for learning and memory. These studies show an association, and cannot prove that marijuana is the cause of the brain abnormalities, or that the abnormalities are harmful. Still, one study found that people who used marijuana heavily as teens had IQ scores that were 8 points lower, on average, than those who didn’t use the drug. People who use marijuana are at greater risk of abusing other drugs later in life, suggesting that marijuana maybe a “gateway drug.” However, it could be that people who are more susceptible to drug use in general tend to start with marijuana because it is more accessible, and then move on to other drugs. In people who are genetically at risk for schizophrenia, smoking marijuana is linked with an increased risk of developing the condition. However, its possible factors other than marijuana are responsible for the link. A person’s risk of a car accident doubles if that individual drives shortly after smoking marijuana. It’s not clear whether smoking marijuana increases the risk of lung cancer compared with people who don’t smoke, but studies suggest that the risk of lung cancer is lower in marijuana smokers than in tobacco smokers.

More research is needed on the ways in which government policies on marijuana affect public health, the researchers said. For example, it’s not known if legalizing pot will lead to an increase in car accidents or an increase in the number of teens who use the drug, Volkow said.

The researchers noted that the potency of marijuana has increased over the last few decades — from about 3 percent THC (tetrahydrocannabinol, the active ingredient of marijuana) in 1980, to 12 percent in 2012. Because older studies were based on lower-potency marijuana, it’s possible that more-harmful health effects may occur with today’s marijuana.

Follow Rachael Rettner @RachaelRettner. FollowLive Science @livescience, Facebook & Google+. Original article on Live Science.

The Drug Talk: 7 New Tips for Today’s Parents 7 Ways Alcohol Affects Your Health Trippy Tales: The History of 8 Hallucinogens

Copyright 2014 LiveScience, a TechMediaNetwork company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed. ]]>

[…]

The National Climate Assessment: What It Will, and CAN’T, Accomplish

The National Climate Assessment released by the White House is a masterful piece of science and risk communication. Susan Joy Hassol, Senior Science Writer, who turned massive contributions from hundreds of scientists into an accessible, persuasive report that will play an important role in getting the U.S. to act on climate change, deserves great credit. Will the report raise public concern about climate change enough to produce the political mandate for action that so many think is necessary? Probably not. But will it help leaders take the actions they need to take even without that mandate? Absolutely. The language of the report is clear, accessible to the average reader. Facts are well-explained. […]

The Perks of Parks

Love the earth? Love the park […]

Girls Finale Recap: Running in Place

Another season of Girls has ended, and nobody seems to have budged. Let’s break it down storyline by storyline. MoreThe Good Wife Watch: Life Is OverratedThe Cast of Mad Men Bemoans the End of the ShowMen Charged With Toppling Ancient Rock Formation Avoid Jail Time Huffington PostHere’s An Updated Tally Of All The People Who Have Ever Died From A Marijuana Overdose Huffington PostReese Witherspoon’s Ballin’ Birthday, Ciara’s Star-Studded Baby Shower & More Weekend News People(First a note: we find out in the beginning of the episode that Adam’s crazy sister Caroline is pregnant with drug-addicted Laird’s baby. Just in case you thought any of the main characters are creepy/weird, here’s Caroline to provide a barometer: “I can feel the labia forming,” Caroline tells Hannah of her fetus. “This is a woman.”) Popular Among Subscribers Geopolitics and the New World Order Subscribe Into Thin AirIt’s Mary Barra’s GM NowJessa Jessa probably spent the least amount of time on screen this season, and the majority of that time she was either high or in rehab. In the finale, Jessa’s new boss, the photographer Bee Dee, asks Jessa to help her kill herself by getting her drugs—a moment that would feel a bit weightier had we not just met Bee Dee last week. Jessa finally agrees and help her new mentor (I use that term generously because, again, we know next to nothing about Bee Dee or her relationship with Jessa). Bee Dee has already swallowed the pills when she (predictably) decides she wants to live after all and yells at Jessa to call 911. Jessa will likely get in some trouble for assisting in an attempted suicide. We found her in rehab at the beginning of this season, we might find her in jail at the beginning of the next. Sure, she fell off the wagon then climbed back on, but we haven’t learned much else about Jessa this season except her friends don’t seem to care all that much about her. Next. Shoshanna Shoshanna’s year of partying was bound to bite her in the bum, and why not save that incoming karma for the final episode? Shoshanna finds out that she cannot graduate from NYU because she failed one of her classes. She goes into a rage, throwing everything in her room. When Marnie casually drops by to tell her that she slept with Ray — “sometimes multiple times a night” — Shoshanna tackles Marnie and tells her she hates her. We do too, Shosh. We do too. Shoshanna finally realizes that Ray makes her want to “be the best version” of herself and begs for him back during intermission on Adam’s opening night. He says they’re in different places with different goals and rejects her. You would think beyond-honest Ray would have come up with a more creative way to turn her down since their life goals seem more aligned now than they did when they dated. Shoshanna has maybe learned some life lessons, like not to take the Rays of the world for granted. Her voice seems a little less high pitched. I don’t know if it was because her hair was styled in a slightly less bizarre way and she seemed a lot less peppy than usual, but she reminded me of her character on Mad Men for the first time in this show. Ultimately thought, Shoshanna wasn’t given enough time to learn and change except for a few glimmering moments at the beach house and in this episode. Marnie Marnie’s perpetual state of heartbrokenness continues to lead her to make bad romantic choices. Charlie, Booth, Elijah, Ray, Desi: Marnie doesn’t have a great track record. She either takes advantage of men or pines after unattainable guys who turn out to be d-bags. Or both. The constant cycle of heartbreak to new romance-turned-heartbreak is getting a little old. This episode alone was a CliffsNotes to Marnie’s entire romantic journey in the last three seasons: after being tackled by Shoshanna for sleeping with Ray, Marnie pushes that situation to the back of her mind as she attempts to seduce Desi. She brings him a gift — James Taylor’s guitar pick — in his dressing room before the show and receives a bare-chested kiss in return. Marnie is glowing when she gets back to her seat before the play. Hannah asks her why she’s so chipper considering she just had a riff with her friend over a boy, and she brags that Desi kissed her. “Are you serious? That’s another person with a girlfriend,” Hannah rightly points out. Marnie seems to get her comeuppance when Desi’s girlfriend, Clementine, confronts her in the bathroom and calls her pathetic. There’s even a little “who wore it best moment” as the women stand next to each other in similar green dresses. But later that night, Marnie creepily watches Desi and Clementine have a fight outside the bar as she peeks around a fence. Who knows whether she’s the cause, but Marnie’s eyes are so big and wet she could be a Disney cartoon. Marnie’s fantasy about Desi (like her fantasy about Charlie before him) is turning her into a bit of a stalker. So unless Marnie winds up single and satisfied or in a stable relationship where she doesn’t idolize a guy or blatantly use him for sex at the beginning of next season, I’d say we’re back to square one with her too. Lena Dunham and Allison Williams in Girls Mark Schafer—Mark Schafer 2013/HBO Hannah Hannah has been struggling with everyone else’s artistic success this season. Marnie seems to be building a small singing career, Adam is on Broadway and Hannah spent much of her time writing advertorial content for GQ after losing her book deal. Though Adam’s demands during rehearsals seem outlandish — he moves out and basically ignores her except for sex — Hannah hasn’t been the most selfless person either. She announced that she was quitting her job while out with Adam’s friends and lied to him about how she was dealing with death to make herself feel better. In this episode, Hannah finally finds herself back in the big leagues: she’s admitted to the Iowa Writer’s Workshop. Hannah enters Adam’s dressing room and puts on her best soothing girlfriend voice (seriously, it sounds like she’s imitating the brave wife of a dying man in a hospital procedural show) to break the news to Adam that she’s gotten into Iowa State. She delivers a speech about each of them having their individual endeavors and seems genuinely happy when Adam later takes the stage. But Hannah was in a much grumpier mood when Adam was succeeding and she was not. While the two ought to each find individual success, dropping the Iowa bomb on Adam did feel like a power play — even if it was only meant to boost her own confidence, not dampen his. It’s as if the two have to dare each other to object to the other’s success. After the play is over, Adam says he thinks he blew it on stage and blames Hannah for telling him the Iowa news beforehand. He accuses her of leaving him, even though he’s the one who moved out for a month and just last episode was contemplating breaking up with her. The two have a fight — possibly a relationship-ending one. The show concludes with a montage showing all the various characters hitting rock bottom — again. Jessa dials 911; Shoshanna breaks a window with her textbook; Marnie spies on Desi; Adam looks miserable at the after-party. And though Hannah initially seems sad as she enters her apartment, a smile crosses her face when she sees her acceptance letter. Hannah may not have grown all that much this season. She is still as self-involved and vapid as ever: when she’s debating whether or not to move to Iowa, she tells her parents, “This is where I live. I’d have to find new friends. I’d have to find a new place to buy yogurt.” But it’s nice to see this season end with Hannah forging her own path to happiness rather than relying on a knight in shining armor to rescue her. The last season ended with Adam holding Hannah. This season ends with Hannah cradling her future. […]