Have lower back pain? You might be part chimp

Chimpanzees have a difficult time walking upright for long periods at a time in part because the shape of the chimp spine is better adapted to walking quadrupedally. Humans, on the other hand, have evolved a number of skeletal adaptations — spine shape included — that makes bipedal locomotion possible. But according to new research by scientists from Scotland, Canada and Iceland, not all humans are as evolved as others in this respect, reports the BBC.
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