World

Scientists just discovered that an asteroid may have ended ‘Snowball Earth’ 2.2 billion years ago

Doyle Rice, USA TODAY Comments Off on Scientists just discovered that an asteroid may have ended ‘Snowball Earth’ 2.2 billion years ago

Some 2.2 billion years ago, an asteroid slammed into the Earth, leaving behind a massive, 43-mile-wide crater in what's now Western Australia.

       
Doyle Rice, USA TODAY
http://api-internal.usatoday.com.akadns.net

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