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Humans, chimps split 4 million years ago: study | Science | Reuters

Humans, chimps split 4 million years ago: study | Science | Reuters: "WASHINGTON (Reuters) - A new study, certain to be controversial, maintains that chimpanzees and humans split from a common ancestor just 4 million years ago -- a much shorter time than current estimates of 5 million to 7 million years ago.
The researchers compared the DNA of chimpanzees, humans and our next-closest ancestor, the gorilla, as well as orangutans.
They used a well-known type of calculation that had not been previously applied to genetics to come up with their own 'molecular clock' estimate of when humans became uniquely human."

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