Science
Why the Earth cooled suddenly about 13,000 years ago? – Tech Explorist
Ancient sediment found in a central Texas cave reveals that volcanic eruptions caused earth cooling not meteors.
One big question was, did an extraterrestrial impact occur near the end of the last ice age, about 13,000 years ago as the ice sheets covering Canada were melting, and cause an abrupt cooling that thrust the northern hemisphere back into the ice age for an extra 1,200 years?
That event is known as the Younger Dryas (YD) event that occurred in the Northern Hemisphere with abrupt cooling over a time interval of decades, with temperatures possibly reaching 15°C colder than the present.
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