Transcript: Imagine the Earth sixty million years ago, not long after the death of the giant reptiles and dinosaurs. On the plains of Africa, descendants of mammals became apes and moved into the trees. They had complex skills of hunting and manipulating tools. They had binocular vision. They had large brains, and they cared for their young and socialized their young. They lived in tribes. They had a complex language. These were our distant ancestors. The ancestral primate about sixty million years ago split off the chain that would become lemurs. About forty million years ago, old and new world monkeys split off the genetic tree. About thirty-five million years ago, gibbons, about fifteen million years ago, orangutans, and only seven or eight million years ago, gorillas and chimpanzees. Contrary to popular perception, humans did not evolve from apes or gorillas, but we all share a common ancestor.