An earthquake with a magnitude of 5.6 shook Oklahoma and other parts of the Midwest on Saturday from Nebraska to North Texas on Saturday, the result of oil and gas field wastewater disposed of underground—a process otherwise known as fracking, reports Associated Press.

The magnitude equals a November 2011 earthquake in the same key energy-producing region.

An increase in high-magnitude earthquakes in the state has been directly linked to fracking, which has made some parts of Oklahoma as shake-prone as Northern California.

Read more at The Los Angeles Times



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