At the center of the lawsuit is Pennsylvania's Environmental Rights Amendment that gives people the right to clean air and water and preservation of the environment.
A group of residents in Westmoreland County hopes a judge will halt expansion of gas drilling in their township, and will throw out a zoning ordinance that allows drilling in most of the community.
New communities in southwestern Pennsylvania are still experiencing the ups and downs that occur when fracking comes to town, even though gas prices have declined.
