Comet impact may have triggered decline of Ohio's Hopewell people 1,600 years ago

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Researchers think that comet fragments may have exploded over Ohio 1,600 years ago, triggering a violent airburst and starting wildfires that devastated the Hopewell people's crops and the landscape.

Comet impact may have triggered decline of Ohio's Hopewell people 1,600 years ago : Read more