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Crabs All the Way Down

Radiolab

What Does the Crabby Shape Really Help You With?

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Scientists think a very important clue lies in this one moment about a hundred million years ago. The temperature of the globe rose several degrees. It raised also the sea level several hundred meters and those floodings made very shallow seas that can get into the land. A real scientific question remains, which is why does it keep reappearing?

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