"The world's oceans are under greater threat than previously believed from a "deadly trio" of global warming, declining oxygen levels and acidification, an international study said on Thursday."

"MYSTIC, Conn. — On her trainer’s command, an alabaster-skinned beluga whale named Naku placed her chin on the deck of her outdoor pool and exhaled several times, emitting a hollow 'chuff' sound with each breath. The vapor rose into a petri dish a researcher held over her blowhole."

"In an episode that evokes B-grade sci-fi movie plots from the 1950s, but actually reflects a continuing global problem, nuclear engineers in southeastern Sweden have been wrestling with a giant swarm of jellyfish that forced the shutdown of the world’s largest boiling-water reactor."

"Florida filed a lawsuit on Tuesday asking the U.S. Supreme Court to reduce neighboring Georgia's use of water from the Chattahoochee River that feeds the oyster beds and fish-spawning areas of Florida's Gulf Coast."

"On an overcast day in early August, a flotilla of five canoes pushed away from a jetty in Astoria, Ore., near where the Pacific breaks on Desolation Point, at the mouth of the Columbia River."

"Critics of hydraulic fracturing, known widely as 'fracking,' have been pushing hard for natural gas companies to disclose all of the chemicals in the fluids that are used in the process. But what if the companies themselves don't even know what those chemicals are?"

"A federal judge in California has sided with environmental groups in their lawsuit against the U.S. government over Navy training exercises off the West Coast involving sonar that they say harms endangered whales, dolphins and other protected marine mammals."

"Shenandoah Riverkeeper Jeff Kelble filed an appeal in Richmond Circuit Court on Wednesday to overturn Virginia's sewage sludge regulations."

"The federal government is about to release its final, $500 million cleanup plan for the Gowanus Canal, one of New York City’s two Superfund sites, a long-awaited moment in the effort to cleanse more than a century of environmental abuse."

"Cancer-causing industrial chemicals have been found in the sewers at a Columbia-area restaurant as a state investigation of illegal dumping expands from the Upstate to the Midlands, where utility officials scrambled this week to learn more about the threat to central South Carolina."

"WHITING -- The Indiana Department of Environmental Management issued its final ruling on a permit application for BP's Whiting Refinery, requiring the company to cut its mercury releases into Lake Michigan by more than half."

"The damage from oil during the BP Deepwater Horizon disaster to communities of tiny organisms living in and on the soft sediment on the floor of the Gulf of Mexico surrounding BP's Macondo well will take decades to repair, according to a new scientific study conducted by NOAA, BP and university researchers."

"At its heart, a major new U.S. EPA report that synthesizes more than 1,000 studies about connections among streams, wetlands, rivers and lakes comes down to what elementary school students are taught about the water cycle. Streams flow into creeks that flow into rivers."

"A federal judge in New Orleans has handed environmental groups what amounts to half a loaf in their push for federal regulations on the flow of pollutants into the Mississippi River that fuels the annual spring low-oxygen 'Dead Zone' along Louisiana’s Gulf coast."

"Long Island's sole source of drinking water lies beneath many of the most contaminated places in New York State."