Monday, May 11, 2026

How 'Snowball Earth' Was A Tug-Of-War

This artist's illustration shows Snowball Earth, when our planet was completely or almost completely covered in ice. There was most likely more than once glaciation event during Snowball Earth, and one of them lasted 56 million years, much longer than climate models can explain. New research might have it figured out. Image Credit: By Oleg Kuznetsov - 3depix - http://3depix.com/ - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=89577421

A new study by planetary scientists at Harvard offers an explanation for one of Earth’s great climate puzzles: how the Sturtian glaciation, an ancient ice age when the planet was nearly entirely frozen, could have lasted 56 million years. A large igneous province in Canada helped them figure it out.



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