Guardian: Scientists have for the first time found dangerous levels of radioactivity and salinity at a shale gas waste disposal site that could contaminate drinking water. If the UK follows in the steps of the US "shale gas revolution", it should impose regulations to stop such radioactive buildup, they said. The Duke University study, published on Wednesday, examined the water discharged from Josephine Brine Treatment Facility into Blacklick Creek, which feeds into a water source for western Pennsylvania...