Massive asteroid hit Greenland when it was a lush rainforest, under-ice crater shows - Livescience.com

The enormous impact crater dates to 58 million years ago.

Researchers studying Greenland's Hiawatha crater conducted research at the edge of the Greenland Ice Sheet in 2019. (Image credit: Pierre Beck) Scientists now know the age of an enormous impact crat… [+4587 chars]

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