Loading...

Snowball Earth | How the Universe Works

59,935 views

Loading...

Loading...

Transcript

The interactive transcript could not be loaded.

Loading...

Rating is available when the video has been rented.
This feature is not available right now. Please try again later.
Published on Aug 25, 2014

Up to 3 times in the past 2.4 billion years, Earth has become a desolate "snowball" with average global temperatures less than -70 degrees Fahrenheit. Only a runaway greenhouse process created by volcanic activity has saved the planet from an icy fate. | For more How the Universe Works, visit http://science.discovery.com/tv-shows...

Catch all new episodes of HOW THE UNIVERSE WORKS Wednesdays at 9/8c on Science Channel!

Subscribe to Science Channel! | http://www.youtube.com/subscription_c...

Check out SCI2 for infinitely awesome science videos. Every day. | http://bit.ly/SCI2YT

Download the TestTube app! | http://testu.be/1ndmmMq

Loading...

From $18.99

How the Universe Works Get season 7 on YouTube

Advertisement
When autoplay is enabled, a suggested video will automatically play next.

Up next


to add this to Watch Later

Add to

Loading playlists...