"After a generation of effort, New England's waters are clean enough to support an oyster industry. But climate change could undermine those gains."

"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."

"The Obama administration on Monday renewed an interagency agreement that backs the development of biofuels for the aviation industry and reiterated its support for embattled federal renewable fuel targets."

"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."

"WASHINGTON, DC -- In a new report, 'Cooking the Books: How The State Department Analysis Ignores the True Climate Impact of the Keystone XL Pipeline,' environmental groups and scientists opposed to the pipeline warn of 'climate disaster' if President Barack Obama allows it to cross the Canada-U.S. border, carrying tar sands bitumen from Alberta to Nebraska."

"Republican lawmakers on Tuesday worked on two fronts to advance legislation that would force approval of the Keystone XL pipeline."