Did Huge Asteroids Trigger A Deep Freeze On Earth? – Videos from CBS26

It’s an unanswered question from millions of years ago, what sent Earth into a deep freeze? There’s a lot of scientific debate about so-called “Snowball Earth”, those multiple periods when the planet was covered in ice. Now a group of researchers think they have the answer. See their theory in this video. – Videos from CBS26 | CBS26.com