Did Fracking Help Cause Oklahoma Earthquakes?

The good people of Oklahoma were rattled on Nov. 5 when the state was hit by its largest earthquake on record, a 5.6-magnitude temblor that struck 44 miles (71 km) east of Oklahoma City. (The previous biggest quake was a 5.5-magnitude tremor that hit in 1952.) Fortunately, no one was hurt, although 14 homes were damaged, and the state was shaken by a number of moderate aftershocks.

More