"President Barack Obama will receive endorsements Wednesday from the Sierra Club, League of Conservation Voters, Clean Water Action and Environment America, according to an environmental political operative and a House Democratic source."

"With a manila envelope labeled 'TOP SECRET' propped up in front of him, state Rep. Lon Burnam, a Fort Worth Democrat, called on the Texas Attorney General to allow the public release of confidential information related to a West Texas radioactive waste dump owned by Dallas billionaire Harold Simmons."

"Wading into a decade-old controversy, former Environmental Protection Agency chief Christine Todd Whitman has urged current EPA administrator Lisa Jackson to close loopholes in a 2006 chemical security law 'before a tragedy of historic proportions occurs.'"

"Soaring gasoline prices have members of Congress and their opponents running scared all across the country -- and trying to seize the advantage."

"We spend lots of time these days focused on children bullied by their classmates at school, at play, and online. ... Bullying is the nicest word to use in describing the recent spate of irresponsible attacks on climate scientists."

"Myriad agencies have investigated BP's Gulf of Mexico oil spill, but the owner of the rig that exploded and sank wants to draw the line at the one designated by Congress to probe disasters involving deadly chemical blasts and releases."

T"he U.S. Chemical Safety Board, which investigates chemical explosions in the same manner the National Transportation Safety Board investigates airplane crashes, launched its first offshore investigation shortly after the 2010 explosion killed 11 workers and allowed more than 4 million barrels of crude to foul the gulf.

"Critics say the measure allows public school teachers to challenge the topics without fear of sanction. Gov. Bill Haslam expresses misgivings about the law."

After 18 months of resistance from the White House Office of Management and Budget, the US EPA has withdrawn proposed guidelines for cleaning up dioxin-contaminated soil at polluted sites. EPA says other guidelines issued in the meanwhile made them unnecessesary. Environmental groups condemned the move and the chemical industry applauded it.