New research on children’s behavior.

The idea that a young child could have psychopathic tendencies remains controversial among psychologists. Laurence Steinberg, a psychologist at Temple University, has argued that psychopathy, like other personality disorders, is almost impossible to diagnose accurately in children, or even in teenagers — both because their brains are still developing and because normal behavior at these ages can be misinterpreted as psychopathic.

The story of former Vikings linebacker Fred McNeill and the lasting impact of his concussions.

Life and death inside a NATO hospital in Afghanistan.

A father and his daughter’s brain tumor.

I’ve grown, over the last few months, the beginnings of concerned; he’s started to suffer bouts of malaise. Nothing too regular, or too terrible: mild stomach aches, sore joints, general lethargy. In anyone else, it could be anything, etc. In Chad, I grow attuned to the slightest variation in temperature, to the distracted look behind his eyes when food isn’t sitting with him.

The impact, both on researchers and patients, of a radical treatment.

The rise of anti-anxiety medication.

How a mysterious twitching epidemic overtook one Western New York town.

An investigation into the myth of actress Frances Farmer’s lobotomy.

Last Fall, America’s favorite focus drug suddenly went into short supply.

The stories of a record-setting chain of transplants.

“In the very near future, the act of remembering will become a choice.”