What's changed is we now have good anatomical, geological, archaeological evidence that Neanderthals are not our ancestors. When I wrote 'Lucy,' I considered Neanderthals ancestors of modern humans. We have gone back twice the age of Lucy, six million years. And we see that upright bipedal walking goes back that far in time.

Donald Johanson

Donald Johanson

Age Ancestors Back Changed Considered Evidence Far Geological Goes Gone Good Humans Lucy Million Modern Now Our See Six Time Twice Upright Walking Wrote Years

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