What a sad, sad response. Everybody knows, well many, that CO2 is a life-giving gas. It doesn't kill (unless you want to push it to well north of 50,000 ppm). It does not bioaccumulate in our bodies. It is necessary for plants to function and grow. You breathe it out every time you say the word, "pollutant." A contradiction in it's own right when you do that. saying it is a "pollutant" is a poor attempt at justification in order to satisfy the status quo (rather than actually learning and understanding it) greenie zealots. Doing so will produce nothing but problems for the rest of the population rather than to solve it.