The Cleveland Plain Dealer
Hydraulic fracturing of deep shale rock to free oil and natural gas has a low risk for inducing earthquakes that can be felt by people, says a new federal study. But the injection of waste water left over from hydraulic fracturing into deep wells...
The Guardian
Scientists don't yet know why it appears storing fracking by-product underground carries a higher seismic activity risk than fracking itself. Photograph: Jim Lo Scalzo/EPA Capturing carbon dioxide and storing it underground could give rise to small...