What did early earth look like?

During the first 500 million years, our planet was hit by a rain of asteroids that melted the surface of Earth and boiled the oceans. A recent study by geologists at the Southwest Research Institute in Boulder, Colorado shows that during the Hadean period, Earth was hit by lots of asteroids that created a volatile environment.

Save videos for later by signing up or logging in

With "My Queue" you can quickly save videos to watch later.

To add an item to your queue just click the sign next to the video.

Once you've added a video visit "My Queue" to start watching!