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...

==========
Snowball Earth | How the Universe Works
Share & Embed

Embed the player

COPY
loader
If you prefer to rent each film separately and not to join a subscription,  Click Here..