Does fracking contribute to "global warming"(climate change)?

http://www.nationaljournal.com/energy/new-study-says-fracking-doesn-t-contribute-to-global-warming-20130916
  This article by Coral Davenport, discusses a study done on the effects of fracking, or lack there of, on climate change.  Cornell released a study of the effects of fracking on the environment in 2011 which showed that methane was released while fracking was ongoing, however the study was based on previously collected data not a live study.  The University of Texas decided to commit to a year long study on fracking and the results of the studies showed that fracking does not actually increase climate change.  The $2.3 million study was paid for by both energy companies and an environmental group, the Environmental Defense Fund.  More studies are desired to be seen on the methane emissions from fracking, and many of these studies will be paid for by the Environmental Defense Fund in the future.  The article shows how fracking is better for the environment than coal as an energy source because it doesn't contribute as much to global warming, however they overlooked talking about the leaking of the chemicals into groundwater.  When fracking occurs, it negatively impacts the environment because it releases chemicals and gasses into the fresh groundwater used by towns, contaminating the water.  Fracking has such a bad effect on the water table that people are often able to light their water on fire in areas that fracking occurs.