Posted by: grokscience | April 22, 2015

Snowball Mystery

HerwartzIn different periods of the Earth’s past, scientists have speculated that the planet was covered in glacier. But how do we know this? On this program, Daniel Herwartz shows how the past climate can be reconstructed through oxygen isotope analysis.

Didn’t “The Empire Strikes Back” take place on a snowball…;)

LISTEN TO EPISODE.

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