All earthquakes of magnitude 3 or greater between 2010-2016, as reported by the U.S. Geological Survey – Map by Max Galka at Metrocosm.com

The map above shows the location and frequency of earthquakes in the United States from 2010 until early 2016. During that time: “Oklahoma has gone from averaging 2 earthquakes a year to averaging nearly 3 earthquakes a day! (See the rectangle above)

Why?

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