Settle down guys. The best thing we can do is..... nothing. Seriously. Leave the free market alone to do its work, and the human species will do what it does best: adapt. To do that, we need resources. For resources, we need money. And that means not killing off half the population, or instituting harsh economic controls. Oh, and there's not going to be any apocalyptic global warming scenario. We're more likely to create apocalyptic scenarios by trying to prevent it (murdering half the population? Seriously?? Even draconian economic and CO2 controls would create apocalyptic economic conditions... you think 2007-2008 was bad? Or 1931? You ain't seen nothing yet, if you try some of the ideas suggested in this thread). Anyways, the models that predict apocalyptic warming are flat wrong. From 1998-2014 (16 years), there's been absolutely no trend in global temperatures, up or down. Our best models say, however, temps should be continuing to increase. They're not. Temps are now well below the confidence intervals of the models, i.e. the models are wrong. This doesn't necessarily mean global warming won't, or isn't happening. It does mean the rate and scale of the warming is almost certainly overrated. The science is simple: Doubling of CO2 from pre-industrial levels yields a +0.6C forcing. The models depend on positive feedbacks to amplify that forcing into catastrophic temps. The reality is, the actual temp gain observed is less than the forcing from CO2, which strongly indicates the feedbacks are negative (really, most natural systems have negative feedbacks, or they wouldn't exist for long). Ergo.... stop freaking yourselves out, grab a beer, enjoy life, and stop worrying about global warming. If you want something to worry about, there's plenty of threats out there that will kill us long before CO2 induced warming will.