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More than 1500 years ago, a vast culture known as the Hopewell tradition (or Hopewell culture) stretched across what is today the eastern United States.
A new scientific study of rock samples has provided evidence that the Hopewell culture of the Ohio region, USA, was wiped out by a meteorite explosion.
UC researchers find evidence of cosmic cataclysm 1,500 years ago at 11 ancient sites. The rapid decline of the Hopewell culture about 1,500 years ago might be explained by falling debris from a near-Earth comet that created a devastating...