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 paint a picture of the Earth a few billion years ago, in the early days of the evolution of life.Follow host Maddie Sofia on Twitter @maddie_sofia. Email the show at [email protected] more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy
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