Last year, Oklahoma recorded 585 earthquakes in the state with a magnitude of three or higher. In 2013, there were 109; before 2008, Oklahoma averaged two earthquakes of that size a year. After years of ignoring growing scientific evidence that the increase in seismic activity was linked to the disposal of wastewater from oil and gas drilling via injection below the surface, on Tuesday, the state government acknowledged the connection between the two.
"The [Oklahoma Geological Survey] considers it very likely that the majority of recent earthquakes, particularly those in central and north-central Oklahoma, are triggered by the injection of produced water in disposal wells," the OGS said in a statement. “The statement is the survey's strongest sin...
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