Ape Genius

Video Extras

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The Ghost Experiment
Chimps that watch how other chimps retrieve a grape from a trick box can pick up the skill. But researcher Lydia Hopper wanted to see whether chimps could learn the same skill after seeing the trick box opened by a ghostly, invisible thread.

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An Indirect Approach
In this short outtake, primatologist Brian Hare tests whether a bonobo can figure out how to get an apple slice precariously perched on a window sill.

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© | Created January 2008