The Younger Dryas represents a time of an unusual combination of abrupt glacial melting followed by climatic cooling that has been explained by an extraterrestrial impact.

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The Younger Dryas is a period of abrupt climatic cooling that occurred approximately 12,900 to 11,700 years ago. This period was characterized by a significant decline in temperature, which was followed by the reappearance of warmer climate conditions. The cause of the Younger Dryas remains a topic of debate, with some scientists proposing an extraterrestrial impact as a potential cause. However, this hypothesis is still being researched and has not been widely accepted as the definitive explanation for the Younger Dryas.

The Younger Dryas Represents a Time of an Unusual Combination