Was a comet responsible for the decline of the Hopewell?

Written by Andrew Sawyer, Education Outreach Specialist On February 1, 2022 Scientific Reports published a report titled The Hopewell airburst event, 1699–1567 years ago (252–383 CE)[1]. In this report, the authors claim to have found evidence of a cosmic airburst event that took place in the Ohio River Valley between about 1,639 and 1,770 years…