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fromwww.theguardian.com
1 week ago

How ancient Scottish rocks throw snowball Earth' theory up in the air

Recent examination of some ancient rocks from the west coast of Scotland have now overturned that thinking, suggesting there were periods during snowball Earth when the climate woke up. Close-up views of thin, repeating rock layers known as varves, each thought to represent a single year of sedimentation during the snowball Earth period.
Science
Philosophy
fromAeon
3 weeks ago

How the harsh, icy world of Snowball Earth shaped life today | Aeon Essays

Earth experienced equatorial-reaching Snowball Earth glaciations between 717–635 million years ago, life survived, and extreme cold may have driven increased biological complexity leading to animals.
Science
fromNature
1 month ago

Ancient 'snowball' Earth had frigidly briny seas

Snowball Earth oceans were extremely cold (around −15 °C) and so highly saline that seawater remained liquid at subfreezing temperatures.
Science
fromwww.theguardian.com
7 months ago

About 700m years ago, the Earth froze over entirely now we may know why

Massive volcanic eruptions combined with a cold climate contributed to Earth's Snowball Earth state 700 million years ago.
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