Scientists find a massive, 23-mile-wide meteorite crater hiding deep beneath the ice in Greenland. The new crater is just 100 miles from a 19-mile-wide crater discovered just 3 months ago, which was tentatively linked to the mysterious, 1,000-year period known as Younger Dryas.

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Scientists find a massive, 23-mile-wide meteorite crater hiding deep beneath the ice in Greenland. The new crater is just 100 miles from a 19-mile-wide crater discovered just 3 months ago, which was tentatively linked to the mysterious, 1,000-year period known as Younger Dryas.