Some are more efficient on two feet than four.
It seems that some chimps surprisingly use less energy walking on two feet than they do loping around on all four limbs. The researchers who discovered the expert walking ability of one chimp say it may help to explain how the earliest humans adapted to standing upright.
Some are more efficient on two feet than four.
It seems that some chimps surprisingly use less energy walking on two feet than they do loping around on all four limbs. The researchers who discovered the expert walking ability of one chimp say it may help to explain how the earliest humans adapted to standing upright.
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