Science & Technology

Scientists May Have Found 2 Million Year Old Missing Link

Walked upright but had a tail

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She walked with a knock-kneed gait, with a heel like a chimp but the upright posture of a human, and she may provide the most complete evidence yet of early man's closest ancestor, scientists say.Two-million-year-old Australopithecus sediba's awkward strut would eventually send a modern man begging for a knee or hip replacement, but scientists are stunned at how evolution equipped her for both climbing trees and walking.