Chad Devereaux examines bricks that fell from three sides of his in-laws home in Sparks, Okla., following two earthquakes that hit the area in less than 24 hours. (AP Photo/Sue Ogrocki)

EPA: North Texas Earthquakes Likely Linked To Fracking

Texas, home to thousands of such wells, is the third-most at-risk state for man-made earthquakes, according to the U.S. Geological Survey — behind only Oklahoma and Kansas.