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Video


Chimpanzees: Leaf Clipping

Published:   August 21, 2008
Total Running Time:   00:02:00
Primatologist Christophe Boesch demonstrates and discusses a leaf clipping, an aspect of chimpanzee behavior.

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More From Evidence: How Do We Know What We Know?

Published:   August 20, 2008
Total Running Time:   00:24:49
Published:   August 21, 2008
Total Running Time:   00:01:35
Published:   November 11, 2008
Total Running Time:   00:03:07