Chris Mooney | The Politics of Ice and Fire The time to act on global warming is clearly now—right now. In a sane world, Congress would immediately take up carbon cap legislation, and President Obama would be giving a big speech on the issue—and pressing Mitt Romney to explain why he flip-flopped into climate skeptic land, moving in precisely the wrong direction on one of the most important issues to afflict humanity.Moreover, President Obama would recognize this as a smart political move, because the hard-core deniers notwithstanding, public opinion on global warming follows the weather. It always does. Now, with the...