"Overall, skull height has grown 6.8 percent since the late 1800s. That’s a bigger percentage than the growth of body height, which has increased 5.6 percent. And comparatively, femur length has only increased about 2 percent. The researchers said that skull shape in Europe has also changed, but not as drastically as in the U.S."
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Americans’ Heads Getting Bigger In Size, Changing Shape, Anthropologists Say
the secret brain drain.
