By now, we all know that CO2 is a deadly poisonous, toxic gas; even a de minimus increase in this trace element can wipe out all life on Earth, except of course for Al Gore and a few cockroaches. This gas is so deadly the Obama Administration is thinking of banning exhaling in order to combat ManMade Climate Change Global WarmerCoolering Global CoolerWarmering the Great Climactic Googly Moogly!! But we also learned that H2O is a more powerful Greenhouse Gas than CO2 yet we never ever never ever never ever hear how much H2O was in the atmosphere 50 or 100 years ago. This can only mean, as usual, Libruls are totally full of methane. Amiright?