Explorer

Chimps on the Edge (2009x12)

Air date: Sep 22, 2009

Chimpanzees. They're our closest genetic relatives, with DNA over 98% the same as ours. Chimpanzees can learn from those around them in ways many other animals can't -- and when they're captive, they become even more human-like. But is a new form of chimp evolving in captivity?