Before 2009, there were, on average, two earthquakes a year in Oklahoma that were magnitude 3 or greater. Last year, there were 907. That’s right, 907.
Oklahoma’s rise in quakes linked to man-made causes
SEPTEMBER 11, 2016, 6:30 PM|What’s the connection between oil drilling and earthquakes in Oklahoma? Bill Whitaker explains that it’s all about the “Arbuckle”
What’s causing Oklahoma’s earthquakes?