Join the U.S. Environmental Protection Agency (EPA) for a webcast titled "Nitrogen and Phosphorus Pollution Series: Nitrate in Ground Water" on Tuesday March 29, 2011, from 1:00 to 3:00 pm (EDT). This webcast will highlight an emerging issue of increased nitrate loading to ground water, a growing national concern. According to EPA’s most recent data, public water systems using ground water as a drinking source serve over 300 million people nationwide.

The Nov. 14 episode of CBS's "60 Minutes" included a segment on natural gas drilling in a process called hydraulic fracturing, also sometimes called fracking. The report focused on the discovery of vast amounts of natural gas in the U.S., which could supply all of the nation's energy needs for years to come and the people who have become wealthy after allowing natural gas to be extracted from shale rock on their property. The report focused briefly on the potential harm to the ground water that this process causes.