TIL that humans are the only animals that have chins

www.smithsonianmag.com

TIL that humans are the only animals that have chins

www.smithsonianmag.com

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Today I Learned (TIL)@lemmy.ca · 10 months ago

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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