QT Yellowstone Caldera (the eruptions of which can be violent enough to send a layer of ash six feet deep as far away as Chicago and which erupts every 600,000 or so years and last erupted 640,000 years ago) update

Yellowstone earthquake counts for the past six months, as of August 1, have gone from 73 to 56 to 62 to 75 to 83 to 66.
The U.S. Geological Survey classifies this as “low background levels,” so there remains no cause for worry about an area that, as a scientist at ¬†University of Zurich’s Institute of Physics recently remarked, “is overdue for an explosion that would alter life on Earth as we know it.”

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