Obama, Romney give little ground on energy during intense debate

The lengthy and testy exchange over energy between President Barack Obama and Republican challenger Mitt Romney came early and set the tone for the rest of their debate Tuesday night at Hofstra University, with both men aggressively seeking the upper hand and last word.

For more than 12 minutes, Romney and Obama accused each other of falsehoods and omissions, at one point engaging in a squabble over the definition of "up." What they did not do, however, was lay out any new proposals or say whether they would act to address global warming.