"Gov. Jerry Brown said Tuesday that he intends to change California's landmark consumer-safety law in an attempt to reduce frivolous lawsuits and give the public clearer information about toxic chemicals."

"Federal judges wrestled today with whether U.S. EPA ran afoul of the law in directing states to implement regulations to address climate change."

"A coalition of progressive groups is pulling its ads from Facebook in protest over political positions taken by the organization started by Facebook founder Mark Zuckerberg."

"Scott Lee, an ardent fisherman from Oak Ridge, Tennessee, has an opinion as to whether Barack Obama should sell the federally chartered Tennessee Valley Authority to private investors: Don't do it."

"NIAGARA FALLS, N.Y. — Inside a warehouse near the Canadian border, boneless hams bound for Philadelphia are coming off a tractor-trailer from Toronto under the gaze of a federal food inspector. Each week, about 20 of the 150 food trucks from Canada are rejected because of paperwork problems or contaminated meat."

"Methane emissions from coal mines escaped being curbed by the Environmental Protection Agency, which said mandatory U.S. budget cuts didn't leave it with the resources to determine if the pollution is a significant risk."

"President Obama's comments over the weekend about his looming decision on whether to expand natural gas exports are the clearest indication yet that the White House intends to greenlight broader global sales of U.S. natural gas, a prospect that has attracted strong backing in states that produce or process the fuel while drawing criticism from some environmentalists and from energy-intensive manufacturers concerned that energy costs would dramatically rise as a result."

"Pacific Gas and Electric Co. could face a record fine for a deadly 2010 natural gas pipeline explosion in a San Francisco suburb. Officials hope it will help prevent future accidents while some warn that rising natural gas demand is outpacing investment in energy infrastructure."

"The United States' new proposal to let countries draft their own emissions reduction plans rather than working toward a common target can unlock languishing U.N. climate negotiations, the U.S. climate change envoy said on Tuesday."

"Living near a toxic waste site may represent as much of a health threat as some infectious diseases, a study in three developing countries finds."