Study Suggests Laurentide Ice Sheet Expansion Was Underway 2,000 Years Ago

Researchers report that the remnants of the Laurentide Ice Sheet may have begun growing again roughly 2,000 years ago. The ice sheet, which once covered much of North America, had shrunk to small fragments by that time. The article indicates that this regrowth was later reversed, suggesting the expansion did not continue. The source article is brief, so details about the specific methods, locations, and measurements behind the findings are limited. Further information would be needed to assess the significance of the reported trend.