The 4.7 magnitude temblors felt last Sunday in Arkansas, part of a recent “swarm” of earthquakes in the area, could be just a prelude to something much more devastating. The threat would be lessened if oil and gas companies are barred from injecting post-fracking wastewater into the earth. Arkansas once had an earthquake so big it caused the Mississippi river to run backwards. There are several faults in Arkansas including one not far from...







