STEVE INSKEEP, HOST:
Good morning. I'm Steve Inskeep. A new study says teenage chimpanzees may be fairly similar to human teens. They take risks, have emotional outbursts, sometimes even show aggression. But a little sympathy for the youngsters, please - researchers say growing adolescent bodies help explain these behaviors. Apparently, all those teenage hormones can make just about anybody go bananas. It's MORNING EDITION. Transcript provided by NPR, Copyright NPR.
