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Do Chins Make Us Human?

Season 8 Episode 3 | 12m 07s

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.

Aired: 10/06/25
Understanding the Isthmus of Panama.
How we might borrow genes from that ancient past of Greenland to help us adapt to the future.
Tiny mammals and a group of lizard-like reptiles shared a trait that helped them survive extinction.
Where the space rock came from 66 million years ago that crashed and killed the dinosaurs.
Fish evolved terrestrial traits to...stay fish?
Why did sharks get so incredibly diverse and odd during the Golden Age?
What exactly made this time period so very, very sticky?
What was Charles Darwin really obsessed with?
Did you know ocean basins are reincarnated?
How did such a large predator survive?