Asteroid strike in WA defrosted the frozen Earth
Apr 01, 2020
1 minute
Editor: Jens E. Matthiesen
GEOLOGY
ore than once, our planet has experienced a ‘Snowball Earth’ global ice age, during which its entire surface has been covered in ice. It happened 2.4 billion years ago, after new oxygen-producing bacteria made the atmosphere colder. The oxygen broke
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