Snowball Earth | How the Universe Works

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

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

Subscribe to Science Channel! |

Check out SCI2 for infinitely awesome science videos. Every day. |

Download the TestTube app! |

Products You May Like

Articles You May Like

Our Five Year Plan to Return Humans to the Moon on This Week @NASA – April 12, 2019
Why Was The US More Motivated To Explore Space In The 1960s Than Today?
NASA Live: Earth Views from the Space Station
Video appears to show SpaceX’s crew spaceship for NASA explode during safety test
NASA Telescope Spots Universe’s First Molecule – Helium Hydride

Leave a Reply

Your email address will not be published. Required fields are marked *