Why do humans have chins… and no other animals do?

It’s one of the strangest little features on your face — and scientists still aren’t entirely sure why it’s there. In this episode, we explore what a chin actually is (hint: it’s more complicated than you think), why it’s unique to humans, and what new research suggests about its origin.

It’s a short, curious look at one of the most human things about being human… and a reminder that evolution doesn’t always follow a plan.