"A Naval training exercise that included an underwater blast off San Diego's coast has been linked to at least three dolphin deaths earlier this month, prompting a probe into whether the military violated the federal law that protects marine mammals."

"Hydraulic fracturing, an increasingly common method of extracting natural gas that involves shooting a concoction of water, sand and chemicals deep underground, has sparked controversy around the country — not least because drillers mostly keep their chemical formulas secret. But Texas, the leading gas-producing state, could help change industry practices by requiring public disclosure of the chemicals used."

"The American Lung Association has opened a billboard campaign against Fred Upton, the Republican chairman of the House Commerce and Energy Committee, taking him to task for his legislative attacks on the Environmental Protection Agency and clean air regulations."

"Senate Democrats hope to siphon votes from a GOP bid to hamstring EPA climate rules by voting first on a Democratic alternative."
 

"More than a quarter of U.S. nuclear plant operators have failed to properly tell regulators about equipment defects that could imperil reactor safety, according to a report by the Nuclear Regulatory Commission's inspector general."

"The federal government promoted some uses of coal ash, including wallboard or filler in road embankments, without properly testing the environmental risks, according to a report from the Environmental Protection Agency's inspector general."

"It has killed millions of fish and hundreds of dolphins and manatees. It has ruined countless Florida beach vacations. And it has left people with respiratory problems gasping for air. Yet until now, how Red Tide's poisons worked remained something of a mystery."

In 1961, three young nuclear plant operators in Idaho were killed when a small experimental power reactor melted down. They were so radioactive they had to be buried in lead-lined coffins under concrete. And one bereaved family was only allowed a five-minute funeral.

"The U.S. Environmental Protection Agency has agreed to grant a petition by three nonprofit organizations to withdraw its approval for the potent greenhouse gas HFC-134a to be used in new automobile air conditioning systems."

The Nuclear Regulatory Commission currently requires nuclear plants to plan evacuation of a 10-mile circle in case of a radiation threat. But the government urged evacuation of a 50-mile circle after the disaster at Japan's Fukushima plant. Here's some information to help you calculate your own risk.