Why the Appalachians Contain Some of the Oldest Fossils on Earth

The Appalachian Mountains are some of the oldest geological features on earth. And they also hold fossils that tell us about some of the very earliest life forms that we'll ever manage to see in the fossil record. So how did these mountains manage to hang on to these precious fossils? The story lies in a billion-year long game of bumper cars, and in these plain-looking little rocks. Hosted by: Hank Green (he/him)