Who's Minding the Teenage Brain?

Scientists find clues to why adolescents seek out and find trouble

In the time it takes you to eat dinner tonight, two adolescents somewhere in the United States will contract HIV. Over the next month, nearly half of all high-school students will sneak a drink of alcohol. And sometime over the course of 2007, one in 12 high schoolers will try to kill themselves.

It is one of the great paradoxes of modern existence: Humans grow far stronger and healthier during their second