When we invade other countries and start wars for their oil and gas, what’s a little earthquake activity here at home?
There are plenty of reasons to worry about fracking—groundwater contamination, methane leaks, that flaming tap water thing. But can it really cause earthquakes? That’s the question the US Geological Survey set out to answer after a spate of tremors in the Midwest—an area not usually known for earthquakes—alerted scientists to the possibility that some of them might be man-made.
Seismic activity in the Midwest started increasing around 12 years ago but picked up significantly in the past few years, says seismologist Bill Ellsworth, the lead author of a new USGS study examining potential links between fracking and earthquakes in the region.