gedaliyah to

Today I LearnedEnglish · 1 年前

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

www.smithsonianmag.com

152

cross-posted to:
[email protected]

480

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

www.smithsonianmag.com

gedaliyah to

Today I LearnedEnglish · 1 年前

152

cross-posted to:
[email protected]

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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Rob T Firefly
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