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December 3, 2012 With growing controversy over the risk of permanent brain injury in contact sports, researchers find an association between repetitive head trauma and brain disease in samples taken from deceased athletes. Many were professional football players.

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November 30, 2012 A vote this weekend by a small group of academics could result in changes to several entries in the Diagnostic and Statistical Manual. Doctors may no longer be advised to avoid diagnoses of depression after the death of a loved one, and Asperger's syndrome may be folded into the spectrum of autism.

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On All Things ConsideredPlaylist

November 26, 2012 Scientists say that whether tipping waiters or trading Christmas cards, we're programmed to reciprocate when we receive a gift. But the rule of reciprocity can also complicate politics and medicine.

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On Morning EditionPlaylist

November 23, 2012 What made Einstein a genius? Maybe his weirdly curvy brain had something to do with it. Scientists have recently analyzed photos from the 1950s to try to figure out what made the genius tick.

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November 16, 2012 Given the pressure of evolution, why have genes behind schizophrenia, autism and others disorders persisted? A study that looks at the likelihood someone is to have kids tries to figure it out.

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November 6, 2012 KHNPeople with high blood sugar had medical expenses that were almost one-third higher than average, as did people with high blood pressure. But among common health problems, depression was linked to the highest spending increase.

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October 31, 2012 Results of a 1976 experiment involving masked trick-or-treaters still hold true today: We're more likely to do bad things — like stealing candy — when we're anonymous. And that tells researchers about the ways adults break the rules, too.

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