There surely can no longer be any doubt that hydraulic fracturing causes unacceptable damage to human and environmental health, to our plans to combat climate change, and to the social fabric of all communities in which it takes place. Here is a definitive database of damning reports on the effects of past and current fracking operations which should, in any sane world, be more than enough evidence to put a stop to this reckless and greed-driven rush to the bottom.
Physicians, Scientists and Engineers for Healthy Energy has issued a Compendium of Scientific, Medical, and Media Findings Demonstrating the Risks and Harms of Fracking, which can be found here: http://concernedhealthny.org/compendium
It is complimented by the incredible online, near-exhaustive database maintained by Physicians, Scientists and Engineers for Healthy Energy of all the peer-reviewed science. It is fully searchable with many tools. It is up to date, whereas the Compendium is updated at periodic intervals. You can get it at: http://www.psehealthyenergy.org/site/view/1180