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3.6 million-year-old footprints suggest early human ancestors were excellent walkers

from The Washington Post

Humans are walkers, and we’re really good at it. Other creatures can walk on two legs — chimpanzees, for example, walk with bent knees and bent hips, kind of like Groucho Marx — but no animal walks the way we do, with the torso vertical, the legs extended, the stride long. more

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