Al and Kamaka, two old friends who are both in their 50s, are experiencing a whole new world. Part of what's novel: females. "Right off the bat, they were just enamored with the ladies in the group," ...

If she were a chimp, Mrs. Robinson still would have brought Benjamin Braddock to his knees, researchers say. A team of researchers led by Boston University anthropology professor Martin Muller is ...

You are never too old to play — a maxim that even adult chimpanzees seem to follow. Young chimpanzees are already known to get many benefits from playing. But it seems to also be more important among ...