Energy companies have already drilled thousands of natural gas wells in shale formations across Pennsylvania, Ohio and West Virginia. But in many ways, that’s proving to be just the opening act of the fracking boom. How that natural gas will be moved from the region’s gas fields to places across the country is now sparking a new round of debate over the environmental consequences of natural gas extraction. In this series, we go beyond the drilling pads to explore the long train of pipelines and compressor stations that gets natural gas to your home—and examine the health and environmental impacts that are being felt along the way.

This series is funded by the Park Foundation. Photo above by Bill Hughes, FracTracker Alliance