"The earthen dikes supporting a huge coal ash landfill at a Tennessee power plant were 'on the verge of failure' long before they collapsed and sent tons of toxic muck into a river and lakeside community, an engineering consultant said Thursday."

Two brothers are busting levees to return the Ouachita National Wildlife Refuge to its primeval condition.

A National Research Council report says it may be impossible to know whether contaminated drinking water at the Camp Lejeune Marine base caused birth defects and illness among people seeking $33.9 billion in claims.

Abandoned gas stations dot some Florida highways. Economic conditions bear part of the blame. But operators' inability to pay for replacement of old, leaky tanks ironically may be causing more old tanks to be left in the ground.

If the Army Corps of Engineers and private companies used all the mud they dredge from wetlands and waterway to rebuild Louisiana coastal marshes, it would be a boon for coastal restoration.

"The Supreme Court refused Monday to hear a Marine's lawsuit blaming the government's dumping of toxic chemicals at Camp Lejeune in North Carolina for his son's illnesses."

"Just days before Christmas last year, an environmental disaster one hundred times the size of the Exxon Valdez (yes, you read that right) unfolded on a riverbank in eastern Tennessee. A wave of poisonous sludge buried a town…along with the myth of clean coal."

"Legislation allowing more selenium to be released into Tennessee streams fell one vote short of passage Wednesday after lawmakers were told approval would mean poisoning the state's waters to help coal company win a lawsuit attacking its pollution."

"Camp Lejeune, a sprawling Marine base on the North Carolina seaboard, is the site of what some scientists call the worst public drinking-water contamination in the nation's history."

Touring the Everglades by airboat, Interior Secretary Salazar promised more federal funds to restore them.

A power struggle has erupted over a North Carolina river.

Terry and Sandy Gupton are worried for the health of both their cattle and themselves. They live near the stretch of the Emory River clogged with coal ash sludge from a Dec. 22, 2008, spill from a TVA plant.

The South Florida Water Management District approved Gov. Charlie Crist's deal to buy 73,000 acres of farmland from U.S. Sugar Corp. for $536 million to restore the Everglades.

EPA's takover of the cleanup of TVA's coal-ash spill in Tennessee came after revelations that TVA's effort to do the job by dredging threatened to become a "major toxic event."

"An empty gasoline tank undergoing repairs exploded Tuesday at a fuel storage facility in rural north-central Arkansas, killing three workers, authorities said."