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Science Bulletins: Chimps Show Complex Body Language

Apes use complex combinations of gestures and facial and vocal signals to communicate. A new study by scientists at the Yerkes National Primate Research Center at Emory University adds to a growing body of evidence that gesture, not vocal signals, evolved into human speech. Watch chimpanzees gesture and learn what brain regions may control this behavior in this Human Bulletin.
Length: 01:54

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