Today I Learned@lemmy.worldEnglish · 5 days ago

TIL humans are the only animal with a chin. We aren't sure why.

www.smithsonianmag.com

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TIL humans are the only animal with a chin. We aren't sure why.

www.smithsonianmag.com

gedaliyah@lemmy.world to

Today I Learned@lemmy.worldEnglish · 5 days ago

158

A Chin-Stroking Mystery: Why Are Humans the Only Animals With Chins?

www.smithsonianmag.com

It's an evolutionary conundrum, and scientists are still divided over the answer

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dohpaz42@lemmy.world
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5 days ago
As in a signal of how manly a man truly is, comparative to still being a boy.

Edit: also, hair is counter productive in a fight, because it gives your opponent something to grab a hold of and use against you.

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