So far this year, Oklahoma has had more earthquakes of a magnitude 3.0 or greater than any other state in the country — including California. More than 200, just since January.
This is a new and remarkable phenomenon. Just five years ago, Oklahoma was averaging only two 3.0 earthquakes a year. Now, it’s averaging one or two a day.
Scientists are saying that oil and gas-related activity, including fracking and wastewater disposal wells in the state, may be partially to blame.