Energy Secretary Steven Chu, right, and Commerce Secretary Gary Locke answer questions at a clean energy and climate change discussion with business leaders, Wednesday, Oct. 7, 2009, in the Eisenhower Executive Office Building across from the White House in Washington. AP Photo logo AP Photo 1 month ago

Energy Secretary Steven Chu, right, and Commerce Secretary Gary Locke answer questions at a clean energy and climate change discussion with business leaders, Wednesday, Oct. 7, 2009, in the Eisenhower Executive Office Building across from the White House in Washington.