Not to hammer the point too much, but I wrote yesterday that we'll need to alter our lifestyles if we plan to halt climate change. In Greasy Rider, I talk to a professor at Dartmouth about this. He mentions that we, as a country, have made sacrifices before for the common good--the most prominent example being World War II. Treehugger.com has put together a collection of posters from the frugal movement of that time, intended to aid the war effort. The themes aren't much different from what are being discussed now. When clearly presented with the problems facing the country, Americans at that time quickly mobilized for the effort.