Traditionally they've been chalked up as legends, fanciful stories, or gross exaggerations...well maybe they all had a basis in actual events.
[...]Stone Age cultures were destroyed and populations of mammoths and other large land animals were wiped out. The blast also caused a major bout of climatic cooling that lasted 1000 years and seriously disrupted the development of the early human civilizations emerging in Europe and Asia.UPDATE: Some background on the mass die off 13K years ago -- as far back as 03' this Science Daily article suggested it was a major climate change event that caused the die offs.
"This comet set off a shock wave that changed Earth profoundly," said Arizona geophysicist Allen West.
"It was about 2km-3km in diameter and broke up just before impact, setting off a series of explosions, each the equivalent of an atomic bomb blast.
"The result would have been hell on Earth. Most of the Northern Hemisphere would have been left on fire."[...]