oklahoma fracking earthquakes, Tag

Oklahoma used to have, on average, one or two perceptible earthquakes a year. Now the state is averaging two or three a day. There were more magnitude 3 or greater tremors here last year than anywhere else in the continental...

When you think of earthquake country, you probably picture California, with its all-too-frequent seismic rumblings. But these days the state you should be imagining is Oklahoma. Between 1978 and 2008, the state experienced...