This is a really good video I found thanks to the Conflicting Opinions blog (http://conflictingopinions.blogspot.com).
Interesting Argument About Global Warming - Watch more free videos
Regardless of your personal views on global warming, assuming you have any, you have to admit the simplicity and the power in his argument. The only problem I had was his assumption that investing in green technologies could cause economic depression. If anything, I think it'd be good for the economy as new jobs would be created as a result of capital being spent, and on top of that, the planet would certainly be a healthier, nice looking place.