I was convinced that its not what its cracked up to be when I recalled an interesting fact I learned in my high school earth science class: CO is naturally occuring in our environment. If not for it, we'd freeze to death as it does act like a blanket. But not all CO stays in the atmosphere. Much of it filters out into space. In addition, plants and other living things also excrete CO, as much as we humans release into the atmosphere. When you put all these facts together it seems rather difficult to believe that the global warming issue is as severe as some (*cough* Cullen *cough*) would like us to believe.