Until 2008, the state of Oklahoma averaged one or two earthquakes magnitude 3.0 or greater a year. Then the lid blew off those numbers. Rising year by year. To 20. Then 42. Then hundreds. Last year, Oklahoma had 585 earthquakes that size. This year, it’s on track for more than 700. Walls shake. Bricks fall. It’s nerve-wracking. And, say experts, it’s all about how the state’s energy companies go after oil and gas. And huge volumes of water being pumped deep in the earth. Now the earth is moving.
This hour On Point: the earthquakes of Oklahoma.
