Workers at a fracking rig in Midland. Studies have linked disposal of fracking wastewater with an increase in seismic activity in Texas, and the Texas Railroad Commission is now investigating a 5.4 magnitude quake that struck West Texas this week. Credit: Jerod Foster / For The Texas Tribune
Workers at a fracking rig in Midland. Studies have linked disposal of fracking wastewater with an increase in seismic activity in Texas, and the Texas Railroad Commission is now investigating a 5.4 magnitude quake that struck West Texas this week.