From this story in the Altoona Mirror:
The location of a Marcellus Shale drilling pad site could mean the difference between life or extinction for some of Pennsylvania's unique wildlife, Penn State officials said Thursday. But if planned properly, there's room in the state's woodlands for it to thrive alongside responsible drilling, Penn State wildlife resources professor Margaret C. Brittingham said. "Natural gas drilling and protecting our natural resource base don't have to be incompatible," she said. "But it requires forethought, planning and trade-offs." Such measures are the only logical step here, considering Marcellus drilling will become a part of western Pennsylvania's industry and landscape for decades to come, Penn State researchers told about 20 people who attended a Cambria County Conservation District's Marcellus Shale forum.