"The United States said on Friday it was appealing a World Trade Organization ruling against U.S. dolphin-safe labeling measures for tuna in a longrunning spat with Mexico closely watched by environmentalists."

"In an almost unheard-of move, scientists who study the deadly H5N1 bird flu announced a 60-day voluntary moratorium on studying the virus to allow time 'to clearly explain the benefits of this important research and the measures taken to minimize its possible risks.'"

"WASHINGTON, DC -- The public is asked to comment on the Obama administration's first draft national strategy to reduce the impacts climate change is already having on wildlife, fish and plants and ecosystems, and the people and economies that depend on them."

"Exxon Mobil agreed Thursday to pay $1.6 million in penalties to the state of Montana over water pollution caused by a pipeline break last summer that fouled dozens of miles of shoreline along the scenic Yellowstone River."

"Scientists have created a genetically engineered microbe that turns the algae into low-carbon biofuel, but must make the technique commercially viable"

"WASHINGTON — A federal judge on Thursday blocked Vermont from forcing the Vermont Yankee nuclear reactor to shut down when its license expires in March, saying that the state is trying to regulate nuclear safety, which only the federal government can do."

"BP is likely to agree next month to pay $20-$25 billion to settle all charges around the Gulf of Mexico oil spill, according to a leading analyst, double the figure the company has set aside and more than other analysts expect."

"Japan's push to restart nuclear reactors shut for maintenance by proving their safety through stress tests and plans to let them operate for as long as 60 years have sparked an angry response from the public, wary of atomic power in the aftermath of the Fukushima disaster."

"STOCKTON, Utah — Gary McCloskey may have destroyed more chemical weapons than any man alive, but he barely reacted when the final weapons from the world’s largest stockpile of warfare agents came out of an incinerator.

"President Barack Obama's re-election campaign sought to manage fallout on Thursday from his decision to nix a new oil pipeline, putting up its first television ad of 2012 to promote his energy record."