Dr. Leakey Discovers Oldest Human Skull

Anthropologist Mary Leakey unearthed a skull fragment that would lead to a rethinking of the origins of human beings. Discovered at the Olduvai Gorge in Tanzania, where Louis Leakey had found prehistoric tools 28 years earlier, the skull of "OH 5" (Olduvai Hominid 5), the toolmaking Homo habilis, is now believed to be 1.75 million years old.

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