Today I [email protected]English • 4 months ago

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

www.smithsonianmag.com

149

488

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

www.smithsonianmag.com

@[email protected] to

Today I [email protected]English • 4 months ago

149

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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41•4 months ago
If other animals don’t have chins, they’re using a weird definition of chin.

Today I [email protected]

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