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Updated: 33 min 55 sec ago

How To Tell When A Laugh Is Real: The Answer Is In A Breath

Thu, 05/08/2014 - 3:03pm

Greg Bryant, a professor at UCLA, explains his studies on laughter. Using acoustic analysis, he found that real laughter was more emotional, closer to animals, and fake laughter was closer to speech.

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Anti-Aging Hormone Could Make You Smarter

Thu, 05/08/2014 - 2:37pm

Scientists have found that a hormone associated with long life also seems to make people smarter. The gene strengthens the connections between brain cells, a process that's essential for learning.

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Rice Theory: Why Eastern Cultures Are More Cooperative

Thu, 05/08/2014 - 2:22pm

Westerners tend to be more individualistic than Easterners. Did our ancestors plant these cultural differences hundreds of years when they chose which grains to grow?

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A Question Of Biggitude: What's The Largest Creature On Earth?

Thu, 05/08/2014 - 1:17pm

Is the largest creature on Earth a tree or a tree strangler? Both are candidates. Both are plausible. Neither is a blue whale.

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If Polar Bears Can Eat A Ton Of Fat And Be Healthy, Why Can't We?

Thu, 05/08/2014 - 11:36am

Baby polar bears slurp milk that's 27 percent fat, and adults dine on seal blubber. Scientists think bears' adaptation to a high-fat diet might lead to better ways to treat human obesity.

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