"A federal appeals court today tossed out a U.S. EPA air pollution rule for some Native American territories."

"BEIJING — Filthy emissions from China’s export industries are carried across the Pacific Ocean and contribute to air pollution in the Western United States, according to a paper published Monday by a prominent American science journal."

"WASHINGTON — More crude oil was spilled in U.S. rail incidents last year than was spilled in the nearly four decades since the federal government began collecting data on such spills, an analysis of the data shows."

"West Virginia's governor on Monday proposed legislation to regulate above-ground storage tanks, a move that comes after a spill of coal-processing chemicals shut off drinking water to about 300,000 people."

"ANDREWS, Tex. — Standing at the lip of what might be America’s most valuable hole in the ground, Rodney A. Baltzer cataloged the features that he said would isolate the radioactive waste to be buried here for thousands of years."

"PHILADELPHIA — Another batch of heavy snow and frigid temperatures is forecast from Virginia to New England as a winter storm bears down on the Mid-Atlantic and northeastern U.S."

"Much of the U.S. is about to get pretty cold again."

"There are more than 80,000 chemicals in the United States catalogued by government regulators, and the health risks of most of them are unknown."

"WASHINGTON — In a broad review of scientific literature, the nation’s top doctor has concluded that cigarette smoking — long known to cause lung cancer and heart disease — also causes diabetes, colorectal and liver cancers, erectile dysfunction and ectopic pregnancy."

"In coming weeks, the U.S. Coast Guard will decide whether to allow wastewater from the hydraulic fracturing industry to be shipped along federal waterways -- including the Ohio River -- and how strict those rules governing the shipments should be."