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Pavithra
Jul 20, 2021, 12:23 PM
Tens of million years ago, sand tiger sharks hunted in the waters off the Antarctic Peninsula, gliding over a thriving marine ecosystem on the seafloor below.
All that remains of them today is their sharp pointed teeth, but those teeth tell a story.
They’re helping solve the mystery of why the Earth, some 50 million years ago, began shifting from a “greenhouse” climate warmer than today toward cooler “icehouse” conditions.
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