Ken Caldeira, reframing the climate problem. Ask your conservative friends this.

From 2009 in The Economist's Is it worth it? What economists have to say about mitigating climate change :

"Ken Caldeira, an atmospheric scientist at the Carnegie Institution, puts the same point a different way. “If we already had energy and transportation systems that met our needs without using the atmosphere as a waste dump for our carbon- dioxide pollution, and I told you that you could be 2% richer, but all you had to do was acidify the oceans and risk killing off coral reefs and other marine ecosystems, risk melting the ice caps with rapid sea-level rise, shifting weather patterns so that food-growing regions might not be able to produce adequate amounts of food, and so on, would you take all of that environmental risk, just to be 2% richer?” He has, he says, often asked audiences this question; nobody has ever answered “yes”."