In this episode, co-host Kate Wexler joins us to ask and answers some questions related to extinction:

-Did dinosaurs have feathers?
-What is extinction anyway?
-Could you bring back species that have gone extinct?

And you can find out more about paleontologist Kristi Curry Rogers here.

Plus, Sam Keenan sings a song about our long-lost pal Australopithecus. And of course, there’s the mystery sound.

SPOILER ALERT: If you want to see that dinosaur we talked about during this episode’s mystery sound, you can see it here.

Brains On! is an award-winning audio show for kids and families from American Public Media.