Funny you should mention that. Penn and Teller did exactly that, to illustrate how ignorant 'feelgood-ism' trumps knowledge.
http://www.youtube.com/watch?v=yi3erdgVVTw
(Some harsh language)
Well, the enviro-freeko-libs have a pretty strong movement going to ban CO2!!
Of course the fact that CO2 comprises 0.54% of the atmosphere and is dwarfed by water vapor as the primary greenhouse gas, makes no difference. Neither does the fact that mankind contributes only about 15% of that 0.54% and volcanos, cows and termites contribute by far the bulk of CO2.
Its the "Ignorant Luddite" Movement or is that redundant?