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Podcast: Short Wave
Episode:

What Earth Looked Like 3.2 Billion Years Ago
Category: Science & Medicine
Duration: 00:11:30
Publish Date: 2021-03-16 08:00:00
Description: Encore episode. The surface of the Earth is constantly recycled through the motion of plate tectonics. So how do researchers study what it used to look like? Planetary scientist Roger Fu talks to host Maddie Sofia about hunting for rocks that can tell us what Earth looked like a few billion years ago, in the early days of the evolution of life.

Email the show at shortwave@npr.org.
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