PITTSBURGH - Hydraulic fracturing for natural gas hasn't contaminated drinking water wells in Arkansas, according to a new study, but researchers said the geology there may be more of a natural ...

Any industrial activity near water reserves could, in principle, cause contamination. Isotope hydrology offers a unique combination of methods to monitor water quality and trace the source of ...

Fracking is an extreme method of oil and gas extraction that involves blasting huge amounts of water — mixed with sand and toxic chemicals — under high pressure deep into the earth. Fracking breaks up ...

The Obama administration Wednesday set the first-ever national standards to control air pollution from gas wells that are drilled using a method called hydraulic fracturing, or "fracking," but not ...

Yvonne Sorovacu (right), Hannah Hohman (center) and Jay Beal monitor a creek for signs of contamination from the Westmoreland Sanitary Landfill in Belle Vernon, Pa. Off a back road in the hilly ...