Paul Krugman: Wind, Sun and Fire

So what’s really at stake in this year’s election? Well, among other things, the fate of the planet.

Last year was the hottest on record, by a wide margin, which should — but won’t — put an end to climate deniers’ claims that global warming has stopped. The truth is that climate change just keeps getting scarier; it is, by far, the most important policy issue facing America and the world. Still, this election wouldn’t have much bearing on the issue if there were no prospect of effective action against the looming catastrophe.