"For the first time since records began being kept in Florida in the 1970s, the number of manatee deaths in a single year has topped 800, with two weeks remaining to the end of 2013."
"The Environmental Protection Agency was justified in intervening to examine possible risks of gas drilling to Texas drinking water, the agency's internal watchdog reported Tuesday. But environmentalists say the report raises fresh concerns about the EPA's 2012 decision to halt its investigation into possible well water contamination in Parker County, Texas."
"The EPA Inspector General's report is the latest analysis to spotlight the regulator's handling of high-profile cases of alleged drinking-water contamination near natural gas drilling sites.
"Researchers say they have discovered a large reservoir of melt water that sits under the Greenland ice sheet all year round."
"In the Brazilian state of Pará, an army of 25,000 workers is building the world’s third largest hydroelectric plant, a controversial construction project –because of the dam’s low efficiency, its environmental impact and its effects."
"The history of the Chesapeake Bay oyster hasn't always been a pure one. So you could forgive a chef for being skeptical about the big bivalve comeback being staged in D.C. and the surrounding area this winter as oyster season gets underway."
"WASHINGTON — Sen. Barbara Boxer’s longtime relationship with environmentalists has been strained by compromises she’s made in the committee she leads to get major pieces of public works legislation through a divided Senate."
"A crisis grips the Indian River Lagoon. Record numbers of manatees, dolphins and pelicans died in the past year — often from mysterious maladies. Sea grass flats are decimated. Unprecedented algae blooms have formed."
"U.S. federal regulators on Thursday said oil and gas company Chesapeake Energy Corp will pay a civil penalty of $3.2 million to settle Clean Water Act violations in West Virginia where it drills in the Marcellus Shale."
"As winter sets in across the northern United States, the road salt that keeps people out of ditches is flowing into rivers at levels that could harm fish and other creatures. With billions of pounds of salt spread on U.S. roads every year, researchers say that rivers, streams and lakes in the nation’s wintry cities are getting saltier. And, according to new research, the salt, or sodium chloride, in rivers remains toxic not just in winter, but throughout two-thirds of the year."
"US government scientists have for the first time found direct evidence of toxic exposure in the Gulf of Mexico."
Advertisement 
