| Mon Apr. 16, 2012 3:00 AM PDT
There are plenty of reasons to worry about fracking—groundwater contamination,methane leaks, that flaming tapwater 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 manmade./.../
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