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Eons: How Volcanoes Froze the Earth (Twice)

10 minutes 28 seconds

Now Playing As: Captioned (English) (change)

Over 600 million years ago, sheets of ice coated the planet on both land and sea. How did this happen? And most importantly, why did the planet eventually thaw again? The evidence for "Snowball Earth" is written on every continent today. Part of the "Eons" series.

Media Details

Runtime: 10 minutes 28 seconds

Topic: Science
Subtopic: Earth Sciences, Geology, Prehistoric Life
Grade/Interest Level: 10 - 12
Standards:

Release Year: 2019
Producer/Distributor: PBS Digital Studios
Series: Eons
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An illustration depicts the dinosaur, Coelophysis, with new born Coelophysis in between its beak.

A painting depicts scientists comparing Piltdown Man's remains to other species. Charles Dawson and Sir Arthur Smith Woodward are seen standing together.

An illustration depicts a pair of dinosaurs fighting each other.

An illustration depicts a bat flying in sky.

An illustration depicts a pair of reptile like dinosaurs running in a desert. Image credit: Ceri Thomas.

An illustration depicts an extinct animal, the Giant Lemur.

An illustration depicts the earth of 50 million years ago, with a supercontinent Laurasia. Caption, Paleographic animation by C R Scotese.

An illustration depicts a theropod dinosaur, looking into a nest with eggs and newborn dinosaurs.

A skull from the fossils of Homo floresiensis, and a rough sketch of the limbs of the fossil remains are presented.

The sculpture, of a dragon sprawled, at the steps of Kinh Thien palace. Caption: Remains of Kinh Thien Palace.