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Podcast: UnDisciplined
Episode:

Undisciplined: The Great Shark Extinction
Category: Science & Medicine
Duration: 00:25:56
Publish Date: 2021-08-05 23:41:11
Description: Researchers recently uncovered the biggest mass extinction event since the dinosaurs. About 19 million years ago, the shark population was decimated by roughly 90 percent. Up until that point, sharks ruled the ocean. Researchers figured this out by analyzing over a thousand fossilized shark skins.
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