Photo: Orangutans May Be Closest Human Relatives, Not Chimps



Chimpanzee (left) or orangutan: Which one is more like a human?

The answer is orangutans, according to a controversial June 2009 study that says the Southeast Asian apes, not African chimps, are our closest living relatives.

Chimpanzee photograph by Cary Wolinsky; orangutan photograph by Vincent J. Musi


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