A US Geological Survey research team has linked oil and natural gas drilling operations to a series of recent earthquakes from Alabama to the Northern Rockies.

 

According to the study led by USGS geophysicist William Ellsworth, the spike in earthquakes since 2001 near oil and gas extraction operations is “almost certainly man-made.” The research team cites underground injection of drilling wastewater as a possible cause.

“With gasoline prices at $4 a gallon, there’s pressure to rush ahead with drilling, but the USGS report is another piece of evidence that shows we have to proceed carefully,” said Dusty Horwitt, Senior Counsel and chief natural resources analyst at Environmental Working Group. “We can’t afford multi-million-dollar water pollution cleanups or earthquakes that could pose risks to homes and health.”