This documentary on fracking seems to show it is safe. It also shows gasland to be fraudulent.
http://www.netflix.com/WiPlayer?movieid=70266688&trkid=13462050&tctx=1%2C15%2Cdf0cc202-6124-48a9-9447-c032745df233-47946827
Matt Damon is a fraud. But those boobs are for real.