Humans are known to invent private hand gestures. Chimps in the wild do, too, a new study suggests. By Brandon Keim Parents and their children, or people who know each other well, often share some ...

Every year on July 14, people around the world celebrate World Chimpanzee Day. This special day commemorates the anniversary of Dr. Jane Goodall's first visit to study wild chimpanzees in Tanzania in ...

The complex’s overhead trail system, installed 14 feet above the ground, allows the chimpanzees and zoo visitors to observe one another. (IBJ photo/Dave Lindquist) After not featuring an exhibit of ...