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SciShow | What Made This Huge Hole Under Greenland? @SciShow | Uploaded 1 month ago | Updated 3 days ago
In the mid-2010s, researchers discovered something odd underneath Greenland - there was a giant hole under a glacier, and they had no idea what had caused it. More confusing still, other researchers were searching for the cause of a mini Ice Age that killed off most of the megafauna and wiped out the Clovis people. Could the Greenland hole be the key to this mystery? Scientists turned to a humble little mineral to put all the pieces together: Quartz.

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Sources:
https://docs.google.com/document/d/e/2PACX-1vRxO2Fep9g9u21TxUULWIVYy0i6u8sW306yfixD0_nTJ1ULUVY-O-IF1arJ1AE1iwMXiMrHSB2HnIcy/pub
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What Made This Huge Hole Under Greenland? @SciShow