They were some of the largest, hairiest animals ever to walk the Earth, but new research shows a big part of the woolly mammoth's diet was made up of tiny flowers.
The work is based on DNA analysis of frozen arctic soil and mammoth poop. It suggests that these early vegans depended on the flowers as a vital source of protein. And when the flowers disappeared after the last ice age, so too did the mammoths that ate them.
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And I'm Audie Cornish. Now, the strange story of Tyrone Hayes. The biologist has devoted much of his career to studying a common herbicide used on corn, called atrazine; specifically, its effects on amphibians. Hayes believes the chemical impedes the sexual development of frogs, and he's publicly argued against the use of atrazine and criticized the corporation that makes it, Syngenta.
A few days in the dark can improve an animal's hearing, scientists report this week in the journal Neuron. This temporary loss of visual input seems to trigger favorable changes in areas of the brain that process auditory information, they say.
Originally published on Sun February 9, 2014 5:39 pm
California's drought is getting very serious — so serious that even those water refills you didn't ask for at restaurants are now under scrutiny.
"We have not had this dry a time period in all of California's history since we've been keeping records — that's how bad it is," Rep. Jim Costa, D-Calif., who represents a district in the Central Valley, told reporters on Tuesday.
Black holes are in crisis. Well, not them, but the people who think about them, theoretical physicists who try to understand the relationship between the two pillars of modern physics, general relativity and quantum physics. Judging from the current discussions, one of the two must go, at least in their present formulation. On January 22nd, Stephen Hawking posted a paper where he bluntly stated that black holes, in the sense of being objects that can trap light and everything else indefinitely, are no more. And that's a big deal.
Originally published on Fri February 7, 2014 1:49 pm
Ladies, if that Super Bowl Sunday pitch from '90s heartthrob John Stamos didn't leave you craving more yogurt, here's some science that might do the trick: There's tantalizing new research suggesting that some friendly bacteria commonly found in yogurts may help women shed more weight while on a diet and keep it off.
Originally published on Thu February 6, 2014 8:04 am
Think about your fifth-birthday party. Maybe your mom carried the cake. What did her face look like? If you have a hard time imagining the way she looked then rather than how she looks now, you're not alone.
The brain edits memories relentlessly, updating the past with new information. Scientists say that this isn't a question of having a bad memory. Instead, they think the brain updates memories to make them more relevant and useful now — even if they're not a true representation of the past.