What's the Chin Good For?
The answer could be right under our noses.
For more than a century, anthropologists have wondered why we possess a chin when apes and our Homo ancestors are chinless. The chin sticks out, so to speak, as a distinguishing human trait. As such, experts have numerous theories about the chin’s evolutionary purpose. We present the best in Science Smackdown.
The Chin as Biomechanical Brace
The biomechanical view has two camps. Human language arose around the same time as the chin. So one camp argues that the tongue muscles’ repet...