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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Of course we know why. So that evolution could result in the universe's most perfect being.
Groovy
Of course we know why. So that evolution could result in the universe's most perfect
beingpatchwork.If Chins Could Kill
156 comments