June 25, 2014 1:58 PM

Kansas, Oklahoma, Texas confront worries about fracking, earthquakes

Earthquakes used to be almost unheard of on the vast stretches of prairie that unfold across Texas, Kansas and Oklahoma. But in recent months, temblors have become commonplace in some areas, rattling nerves and raising suspicions that the shaking might be connected to the oil and gas drilling method known as hydraulic fracturing.

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