TIL humans are the only animal with a chin. We aren't sure why.
TIL humans are the only animal with a chin. We aren't sure why.
www.smithsonianmag.com A Chin-Stroking Mystery: Why Are Humans the Only Animals With Chins?
It's an evolutionary conundrum, and scientists are still divided over the answer
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TIL chins are only chins because they stick out. I had always considered the front of a lower jaw to be a "chin".
In other words some people really have no chin...
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