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Do Chins Make Us Human?
Season 8
Episode 3
You share a trait with every single human who's ever lived – but no other animal on Earth has it. It's not your big brain, or your opposable thumbs... it's actually this little shelf on your face that we call a chin. And here's the thing: we're not totally sure why it exists.
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Learn about how researchers have discovered a piece of a weird, but critical, time in the deep past…