Scientific American: Fracking has been banned in New York State since 2008. Then-Governor David Paterson imposed a moratorium on the controversial technique-- which fractures shale rock using high pressure, specially treated water to release gas trapped inside--citing the need for further study of health and environmental risks. After six years and a multiplicity of such studies the results seem to indicate that fracking can be done safely--but often is not. And that is conclusive enough to allow the current governor,...