"The ozone layer that shields life from the sun's harmful rays is projected to recover from harmful chemicals by mid-century, but it will take longer over the polar regions, a United Nations study said on Thursday."

"The New Mexico Environmental Law Center today appealed to the U.S. Supreme Court to reverse a lower court decision that allows uranium mining in the Four Corners region of New Mexico. The appeal claims the mine would contaminate drinking water used by some 15,000 Navajo people."

"According to recently leaked documents, the Pennsylvania Office of Homeland Security has been tracking anti-gas drilling groups and their meetings — including a public screening of the film 'Gasland,' a documentary about the environmental hazards of natural gas drilling."

The House Science Committee on Thursday holds a hearing to probe what went wrong thirteen years ago when a federal report whitewashed the health threats to Marines and their families from contaminated water at the Camp Lejeune, N.C., base.

EPA has reissued the operating permit for the world's largest sewage treatment plant -- Blue Plains, which handles sewage from most of the DC metro area. Despite huge improvements in the Potomac River since the 1960s, Blue Plains needs to reduce its nitrogen discharge another 45 percent to protect the Chesapeake Bay.

"Candidates are lining up behind the issue of gas drilling as the controversial method called hydrofracking takes center stage this election season in the Finger Lakes region."

"The story of Hilmar is a classic tale of a company growing rapidly, bringing good jobs but also environmental threats to a rural farm community. In an ironic twist, though, it isn’t corporate outsiders pitted against town residents; the owners of Hilmar Cheese are descendants of the community’s founding families. Much of the well water around the cheese plant, located in the agricultural heart of California, isn’t fit to drink. And Hilmar Cheese is the likely culprit, new documents show."