January 21st, 2013
08:25 AM ET

Morality: It's not just for humans

By Elizabeth Landau, CNN

You might recognize prominent primatologist Frans de Waal from lectures he has given about his research on primate behavior, which have been popularized on YouTube.
His face is familiar to chimpanzees, too; some chimps that he knew as babies still recognize him even after decades apart, he said.

"Chimpanzees have the advantage that you cannot ask them questions, so you have to watch (their) behavior to see what they do," says de Waal, director of Emory University's Living Links Center, in his Dutch-accented voice that is both gentle and authoritative.

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