Why Did The Earth Totally Freeze For 100 Million Years?

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Researched and Written by Leila Battison
Narrated and Edited by David Kelly
Thumbnail Art and Art by Ettore Mazza
Snowball Earth image by Oleg Kuznetsov - 3depix - http://3depix.com/ • CC BY-SA 4.0

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Music from Epidemic Sound and Artlist, stock footage from Videoblocks.

Image Credits:

Earth during Last Glacial Maximum By Ittiz - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/....w/index.php?curid=92

James St John Tillite Rocks
Banded Iron Formations

Tillite Victoria Australia By Rexness from Melbourne, Australia - Permian sandstone with tillite deposits, Werribee Gorge State Park, Victoria Australia, CC BY-SA 2.0, https://commons.wikimedia.org/....w/index.php?curid=76

Dropstone By Eurico Zimbres, CC BY-SA 2.5, https://commons.wikimedia.org/....w/index.php?curid=26

Kent G. Budge - Dropstone within pyroclastic bed in the wall of Kilbourne Hole, Organ Mountains-Desert Peaks National Monument, New Mexico, United States

Glacial striations By Walter Siegmund - Own work, CC BY 2.5, https://commons.wikimedia.org/....w/index.php?curid=25

Varve Andreas Steinhoff, Attribution, via Wikimedia Commons

Permafrost thawing By NPS Climate Change Response - Thawing permafrost, CC BY 2.0, https://commons.wikimedia.org/....w/index.php?curid=50

Permafrost By Boris Radosavljevic - https://www.flickr.com/photos/....139918543@N06/248231 CC BY 2.0, https://commons.wikimedia.org/....w/index.php?curid=80

Cryoconite By Ville Miettinen from Helsinki, Finland - Crevasse, CC BY 2.0, https://commons.wikimedia.org/....w/index.php?curid=54

Cryoconote by By Kertu Liis Krigul - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/....w/index.php?curid=64

00:00 Introduction
05:33 Mystery Glaciers
17:00 Snowball Earth
27:22 How?
39:23 Escape