Ian Urbina with the New York Times has written a groundbreaking series exposing the pollution caused by natural gas drilling.
This from the first article in a three-part series:
More than 1.3 billion gallons of wastewater was produced by Pennsylvania wells over the past three years, far more than has been previously disclosed. Most of this water enough to cover Manhattan in three inches was sent to treatment plants not equipped to remove many of the toxic materials in drilling waste. Ian Urbina, New York Times, February 26, 2011