A hotspot that now lies in the middle of the Atlantic Ocean was once under the Great Lakes, and may explain why they formed where they did. The Great Lakes formed where they did 20,000 years ago ...
Newsweek on MSN20d
Yellowstone Volcanic Activity on the Move, Geologists WarnLarge explosive eruptions occur in Yellowstone around once every 700,000 years, according to the U.S. Geological Survey.
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