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Researchers have found that kids with autism spectrum disorder who did yoga at their elementary school behaved better than kids with autism who weren't doing yoga.

The researchers surveyed teachers at a school in the Bronx who said a daily yoga program reduced the kids' aggressive behavior, social withdrawal and hyperactivity.

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IRA FLATOW, HOST:

This is SCIENCE FRIDAY. I'm Ira Flatow. Fifty years ago this week, a team of researchers at General Electric created something new: a solid-state device that could emit visible red light without getting hot like a light bulb. Other groups have made light-emitting devices, but this was the first practical one that could make light that a person could see, rather than invisible infrared light.

For nearly a decade, scientists and Northwest tribes in Washington state fought bitterly over whether to bury or study the 9,500-year-old bones known as Kennewick Man. Scientists won the battle, and now, after years of careful examination, they're releasing some of their findings.

For starters, Kennewick Man was buff. I mean, really beefcake. So says Doug Owsley, head of physical anthropology at the Smithsonian's National Museum of Natural History, and the man who led the study of the ancient remains.

A life well-worth noting has caught the attention of obituary writers:

-- "Andrew F. Brimmer, a Louisiana sharecropper's son who was the first black member of the Federal Reserve Board and who led efforts to to reverse the country's balance-of-payments deficit, died on Sunday in Washington. He was 86." (The New York Times)

Fidel Castro's son, Alex Castro, is batting away rumors that his father, the former leader of Cuba, had died.

"The commander is fine, doing his daily things, reading, exercising," Alex Castro said.

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IRA FLATOW, HOST:

This is SCIENCE FRIDAY; I'm Ira Flatow. The 2012 Nobel Prizes were announced this week in Stockholm, and groundbreaking research on stem cells, cloning, cell receptors and quantum optics, yeah, claimed the honors this year. The physics prize was awarded to French physicist Serge Haroche and American David Wineland of the National Institute of Standards and Technology and the University of Colorado.

"With all due respect, that's a bunch of malarkey," Vice President Biden said during Thursday's debate as he challenged Rep. Paul Ryan's assertion that U.S. foreign policy has unraveled under President Obama.

A little later in the debate, Biden said Ryan's criticisms were "a bunch of stuff" — and when moderator Martha Raddatz asked "what does that mean?" he said, "we Irish call it malarkey."

Biden's use of the word has many asking: Where does it come from?

"U.S. consumer sentiment unexpectedly rose to its highest in five years in October as consumers became more optimistic about the economy in a possible boost to President Obama's reelection hopes," Reuters reports.