Lucy brought with her an image of our human ancestors that you don't get when you find a jaw or an arm bone or a leg bone. Here was 40 percent of a single skeleton.

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• Donald Johanson:

  But it really wasn't until three to four years later, when we had an opportunity in the lab to make

• Donald Johanson:

  When I realized, in 1978, that Lucy did represent a new species of human ancestor, and that I had a

• Donald Johanson:

  Scientists are very afraid of being proven wrong.

• Donald Johanson:

  I think that many of my ideas are correct, but I'll bet you, before my death other discoveries will

• Donald Johanson:

  What makes us human depends on what place on our evolutionary path we're talking about. If you go b

• Donald Johanson:

  Where we are going as a species is a big question. Human evolution certainly hasn't stopped. Every

• Donald Johanson:

  What's changed is we now have good anatomical, geological, archaeological evidence that Neanderthal

• Donald Johanson:

  I don't think we interbred with the Neanderthals at all. There are some people who think that there

• Donald Johanson:

  Evolution explains our biological evolution, but human beings are very unique creatures. As the Dob

• Donald Johanson:

  We are placed in the genus of Homo, which is Latin for man - Homo sapiens: supposedly wise men. I s