Several months ago, I had a discussion with a fellow musician who believes in AGW. I asked him what percentage of the atmosphere was CO@. He said, “A lot.” I didn’t correct him. I told him to get on his computer and find out, and then go one step further and look up what man’s contribution to that total was. Next time I saw him, I asked again. This time he answered, “Not much.” So he may be waking up!
Right on! I have also found that when they discover it is less than .04%, some will start thinking that is a very small quantity.
Before being enlightened, some even think CO2 is the most common gas in air.