Here's a great article in First Things by William Happer, the Cyrus Fogg Brackett Professor of Physics at Princeton University: "The Truth About Greenhouse Gases."
2) really a "pollutant," as the U.S. Government has declared via its far left-leaning EPA? If so, then we'd better reconsider the whole matter of us human beings performing that little act of breathing. As Happer states, "Carbon is the stuff of life. Our bodies are made of carbon. A normal human exhales around 1 kg of CO2 (the simplest chemically stable molecule of carbon in the earth's atmosphere) per day." The rest of the article is quite enlightening.
Not only that, but green plants actually thrive on CO2. We may just want to increase our "carbon footprint"!
2 as "pollutant" thing reminds me of another one-liner that some might use to scare an unsuspecting public: Did you know that 100% of the people who consume "dihydrogen monoxide" eventually die after consuming it? Check it out here and here.