Origins of Bipedalism

  • By Rima Chaddha
  • Posted 10.01.06
  • NOVA

Why do we walk on two feet? If you asked a roomful of anthropologists, you'd likely get a different answer from each person. In the course of human evolution, was there one key factor—changing landscapes, the need to keep cool, the advantage of attracting a mate? Here, sample leading hypotheses and vote for the one you prefer. Then hear paleoanthropologist Donald Johanson's take.

Launch Interactive Printable Version

Explore hypotheses for why we stand up, choose your favorite, then hear what paleoanthropologist Donald Johanson thinks.



© NOVA/WGBH Educational Foundation
(Donald Johanson)
Courtesy Donald Johanson

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