Romney [from convention speech to be delivered]: "Obama promised to slow the rise of the oceans and heal the planet. My promise is to help you and your family."
Obama [from speech to college students]: Denying climate change won't make it stop.
According to Ben Domenech of RedState, Romney's crack is the single best line in his speech.
True, probably. Politicians are notorious for promising too much, and it's a lot easier to believe a candidate could give a short-term gain than long-term sustainability.