Roughly 12,800 years ago, as Earth was emerging from its last great ice age, temperatures in the Northern Hemisphere suddenly plummeted back to near-glacial conditions. The cause of this abrupt shift—known as the Younger Dryas cool period—remains a mystery to this day, but new evidence may give credence to its most controversial explanation. Researchers analyzed sediment cores extracted from the …
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Microscopic grains of alien dust buried in the sediment at the bottom of the ocean could be evidence of a comet that exploded in Earth’s atmosphere 12,800 years ago. This hypothetical event, known as the Younger Dryas impact, was invoked to explain a sudden, 1,200-year period of rapid cooling to near-glacial conditions during a time when Earth’s climate was on …
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Microscopic grains of alien dust buried in the sediment at the bottom of the ocean could be evidence of a comet that exploded in Earth’s atmosphere 12,800 years ago. This hypothetical event, known as the Younger Dryas impact, was invoked to explain a sudden, 1,200-year period of rapid cooling to near-glacial conditions during a time when Earth’s climate was on …
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