Hydraulic Fracturing

Geologist: Fracking Can Cause Small EarthquakesScientists are exploring a new concern about gas extraction in Pennsylvania's Marcellus Shale beds: Earthquakes.
Gas Drilling Pushes Susquehanna To Top Of "Most Endangered" ListThe group says natural gas extraction poses two potential threats: the soup of toxic chemicals and the huge amount of water pumped down wells so natural gas comes up.
Philadelphia City Council Will Hold Hearing On ‘Fracking’Opponents of the natural gas extraction technique say they hope to avoid possible contamination of the Delaware River Basin.