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IPFS News Link • Science, Medicine and Technology

Humans walk upright to conserve energy

7-16-2007 • AP

Why did humans evolve to walk upright? Perhaps because it's just plain easier. Make that "energetically less costly," in science-speak, and you have the conclusion of researchers who are proposing a likely reason for our modern gait.

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Reported By Powell Gammill

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Humans walk upright to conserve energy

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