In another twist, a population of wild chimps in Uganda's Kibale National Park appears to be using objects as toys. (newscientist.com)
The world's top expert on chimpanzees, Goodall spent more than 50 years observing and documenting social interactions of wild chimps in Tanzania, starting under the guidance of Louis Leakey in the late 1950s. (filmnoirblonde.com)
Homo habilis could have learned to make the Oldowan tool on his or her own, much as wild chimps use sticks to fish for termites. (sciencedaily.com)