National (U.S.)

"The U.S. government Tuesday announced new rules for snowmobiles in Yellowstone that should make the country's oldest national park cleaner and quieter."

"Carbon dioxide emissions from energy production in the United States fell to 5.29 billion metric tons in 2012 -- its lowest level since 1994 -- despite a growing economy and rising population, according to government data released on Monday."

"Three years after well blowout, declining seafood catches and deformities point to an environment in distress."

"Gas prices have plateaued in the past week, but analysts expect fall's broader downward trend to pick up pace again as cooler weather prevails and demand for gas dwindles. National gas prices are likely to get tantalizing close to -- but not quite at -- $3 a gallon."

"WASHINGTON — America's 12 largest supermarkets and retailers are failing to curb their hydrofluorocarbon emissions, adding large amounts of greenhouse gases to the environment, according to a new report."

"Rep. Randy Neugebauer (R-Texas) apologized Thursday for scolding a park ranger over keeping the World War II Memorial closed during the government shutdown."

"In the spring of 2005, Georgia-Pacific Corp. found itself facing nearly $1 billion in liability from a product it hadn’t made in nearly three decades: a putty-like building material, known as joint compound, containing the cancer-causing mineral asbestos."

"Every woman in this story is confoundingly non-descript. Short hair, often grey. Conservative dress. Unmarried; soft-spoken. Most are well into their 70s, and all will tell you that their way of life is dying out. They will also tell you, with surprising conviction, that the world is in peril."

"When it snowed in Flagstaff, Ariz., recently, thousands of people woke up and turned up their electric heating, and Arizona Public Service saw electricity demand reach a morning peak. To meet the demand, the company used the previous afternoon’s sunshine."

"Glenn Greenwald, the reporter and blogger on the National Security Agency's massive surveillance program, is leaving Britain's Guardian newspaper to join a new media venture."