"BILLINGS, Mont. -- Internal investigators faulted the Environmental Protection Agency on Thursday for years of delays in completing health studies needed to guide the cleanup of a Montana mining town where hundreds of people have died from asbestos exposure."

"WASHINGTON -- A dozen states and cities and three major environmental groups have notified the Environmental Protection Agency that they plan to sue the regulator unless it issues final rules limiting greenhouse gas emissions from new power plants."

"U.S. construction workers, environmentalists and company executives squared off on Thursday at a raucous meeting on the Keystone XL oil pipeline, but it was unclear the gathering changed any minds on the controversial project."

"The Senate Energy and Natural Resources Committee today confirmed the nomination of Ernest Moniz to become the next secretary of Energy on a 21-1 vote."

"WASHINGTON — The Supreme Court ruled on Wednesday that Nigerian plaintiffs who said foreign oil companies had been complicit in violating their human rights may not sue in American courts. The decision limited the sweep of a 1789 law that had been used to address human rights abuses abroad."

With a tiny budget, the U.S. Chemical Safety Board is coming under fire for slowness in completing investigations on a large number of major accidents involving chemical hazards.

"Many Americans assume that the chemicals in their shampoos, detergents and other consumer products have been thoroughly tested and proved to be safe. This assumption is wrong."

"Supreme Court justices [Tuesday] appeared receptive to the trucking industry's call to strike down a Port of Los Angeles program designed to clean up some of the country's most diesel-polluted air."

"Drought and demand are pushing the Colorado River beyond its limits — with the needs of more than 40 million people in seven Western states projected to outstrip dwindling supply over the next 50 years, according to an advocacy group's report on endangered rivers released on Wednesday."