“The Day the Earth Changed” –Unveiled by a Young 31-Kilometer-Wide Greenland Crater

 

Greenland Hiawatha Crater

 

“It’s much more extreme than I ever thought,” said UC Santa Barbara geology professor emeritus, James Kennett, about signs of a major cosmic impact that occurred toward the end of the Pleistocene epoch known as the Younger Dryas Impact Hypothesis, which postulates that a fragmented comet slammed into the Earth close to 12,800 years ago, causing rapid climatic changes, megafaunal extinctions, sudden human population decrease and cultural shifts and widespread wildfires.

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