A Snowball Earth: How the Ice Age Nearly Wiped out All of Life

This documentary explores Snowball Earth, the cataclysmic ice age more than 650 million years ago that sealed the planet in ice and nearly extinguished all life. It examines the geological evidence for a frozen world and the forces that could plunge Earth into such a deep freeze. Along the way it asks how life clung on and eventually flourished again. Spectacular and scientifically grounded, it turns a distant climate catastrophe into a gripping story of survival. Free to watch in HD on Dr Documentary.

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