environmentalimpactofhydraulicfracturingintheunitedstates

An earthquake that shook West Texas on Friday may be one of the strongest ever recorded in the state, the Associated Press reported. The magnitude 5.4 quake struck at around 5:35 p.m. local time about 22 kilometres north of Midland. It comes just a month after another 5.4 quake in the region, and officials are…