Presidential Hopefuls Take on Global Warming

At their final face-off in Iowa last week, the three leading Democratic presidential candidates tried to outdo each other in describing their commitment to fight global warming.

Hillary Clinton wants to rally Americans on climate change the way they rallied behind the space program when she was a child.

John Edwards calls the fight against global warming a "moral responsibility" which demands leadership from a president who will draw on American patriotism for something other than war.

Barack Obama calls it a "moral imperative" to leave the planet clean for his two young girls.

But in the wake of the recent Bali climate summit are prospective successors to George W. Bush pledging to move quickly enough for the rest of the world? Or are they in line with the American electorate?