Forbes: Shale oil and shale gas development is helping give new life to parts of the country. But it could also be helping to do something more nefarious contribute to smaller earthquakes by discharging millions of tons of wastewater that had been used to drill. Thats according to research recently presented at the Seismological Society of America annual meeting by the U.S. Geological Survey. It says that water that is leftover after fracking must get flushed back down. That is adding stress to existing...