Climate Home: A kitchen tap catching fire in 2010 documentary Gasland highlighted the risks of the US shale boom, and energised a movement of anti-fracking activists.
Amid the controversy, does living near a gas or oil well really affect your drinking water?
"The answer to that question is usually 'no,` but there are exceptions," said Rob Jackson as the Stanford professor presented his research on groundwater quality on Sunday to the American Association for the Advancement of Science.
The US pumped out...