There is so little carbon dioxide in the atmosphere, 420 parts in 1,000,000, equal to 4 parts in 10,000, and if doubled, which it can’t, would still be well less than 1/10th of 1%, (.0008) it is too little to take seriously. The claim that it is an atmospheric gas is truly nonsense, but no one questions it. Dry ice is frozen CO2, and Chemistry lessons in high schools show that, in water, the dry ice turns to gas, lighter than water, that visibly rises to fill the bowl and overflows onto the table and, then, to the floor. If the room is small enough a candle is shown to extinguish if it is lowered into the warm and invisible CO2 gas near the floor.

All vertebrates and just about every animal needs CO2 to live and both CO2 and the waste CO2 they release, had to be near the surface for our evolution and growth of the food chain. The amount of CO2 change in the atmosphere, over time, can be shown to correlate with volcanic activity. Think about it, please!

Gravity can’t be overcome by gases. Only an explosive force greater than gravity can force CO2 into the atmosphere, and that is why there is so little of it, and why it doesn’t increase despite the thousands of tons of it that are exhausted by animals, insects, and humans every second.

The above was from Denis O’Malley Graduate of University of Florida