St. Augustine said it best: "Faith is to believe what we cannot see; and the reward of this faith is to see what we believe," in this particular case, the deleterious effects of man-made carbon dioxide emissions. On the other hand, if one prefers to trust evidence, the answers are perfectly clear.Carbon dioxide is a transparent, odorless, and tasteless gas and not a pollutant. Its concentration is increasing slowly in the atmosphere but has not yet reached 400 ppm, while it will take 20,000 ppm to make you feel short of breath and 50,000 ppm to kill you. No reason to panic.Some 18,000 years ago the Arctic Ice Cap covered much of the north part of this continent, Europe, and Asia...