"Arnold Schwarzenegger told you he’d be back. Just months removed from a raucous seven years as California governor, the global warming gladiator is about to hopscotch around the planet in his new role as a green technology cheerleader."

"First as ranking minority member and now as chairman of one of the most powerful committees in Congress, San Diego Republican Darrell Issa has built a team that includes staff members with close connections to industries that could benefit from his investigations."

Natural gas drillers hail newly begun reuse and recycling of the millions of gallons of toxic wastewater as a breakthrough that will mitigate harmful effects of their operations. But not all of it is being recycled. Some of it is being spread on roads and contaminating surface water -- rather than groundwater, as before.

"A two-decade-old crackdown on smog and soot under the Clean Air Act will yield about $2 trillion in annual benefits by 2020, according to a study that was released by U.S. EPA this morning and was touted as proof that the embattled agency's rules are an economic boon for the American people."

"The California utility whose gas pipeline exploded last fall had rejected federal recommendations to install more automatic shut-off valves to help reduce the risks from a rupture and fire, an investigative panel was told Tuesday."

"Polystyrene makes comeback in US Congress building after Republicans reverse green initiatives brought in by Democrats."

"Hundreds of activists marched to the federal courthouse Monday to support a man who became an environmental folk hero by faking the purchase of $1.7 million of federal oil-and-gas drilling leases in an act of civil disobedience."

A new coalition of clothing retailers, manufacturers, environmental groups, and academics is developing a database which they hope will eventually allow them to give every garment a sustainability score.

"As the House and Senate begin a political dance this week that includes the threat of shutting down the government over steep budget cuts passed by the House, many federal employees already know the steps."

"Rising temperatures, drought and the spread of destructive insect pests will shrink the North American range of the lodgepole pine nearly 10 percent by 2020, a new study finds."