Human elbows and shoulders advanced as ‘brakes’ for climbing ape ancestors

People have ape ancestors to thank for his or her versatile shoulders and elbows, which can have advanced as a pure braking mechanism for tree-scaling.

Scientists made the invention whereas watching quite a few movies of chimpanzees (Pan troglodytes) and sooty mangabey (Cercocebus atys) monkeys, that are rather more distantly associated to each chimps and people, climb up and down bushes within the wild. 

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