People frequently fret that we can't afford the measures necessary to fight climate change. That is false. We are an enormously rich country. We're in the midst of spending trillions on a war that is providing no benefits whatsoever, just to stoke the imperialist fantasies of our ruling class. We can afford whatever we want. It's whether we really want it that's the question.
Some good polemic from David Roberts at Gristmill, via Ezra Klein. More key facts from the post:
1. Projected total US spending on the Iraq war could cover all of the global investments in renewable power generation that are needed between now and 2030 in order to halt current warming trends.
5. In 2006, the US spent more on the war in Iraq than the whole world spent on investment in renewable energy.
6. US presidential candidate Barack Obama has committed to spending "$150 billion over 10 years to advance the next generation of green energy technology and infrastructure." The US spends nearly that much on the war in Iraq in just 10 months.