Colleen O’Neil, of the Mountain Watershed Association, fixes a crooked sign posted near a landfill's discharge pipe that flows into Sewickley Creek in Yukon, Pa. Credit: Scott Goldsmith/Inside Climate ...

Colleen O’Neil, of the Mountain Watershed Association, fixes a crooked sign posted near a landfill's discharge pipe that flows into Sewickley Creek in Yukon, Pa. This article originally appeared on ...

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 ...