First, carbon dioxide, CO2, is emphatically NOT a ‘pollutant.’ All living things are built of carbon that comes fromCO2. An increase in essential CO2 in the atmosphere will be a huge benefit to plants and agriculture. Satellite measurements show that the increase of CO2 over the last few decades has already caused a pronounced greening of the planet — especially in arid regions or tens of millions of years, plants have been coping with a ‘CO2 famine.’ Current CO2 concentrations of a few hundred parts per million (ppm) are close to starvation levels compared to the several thousand ppm that prevailed over most of history e support the cost-effective control of real pollutants associated with the use of fossil fuels — for example, fly ash, oxides of nitrogen and sulfur or smog-forming volatile hydrocarbons. But CO2 isn’t a pollutant, and there’s no reason to control it econd, the “warming” from CO2 — and yes, CO2 is a ‘greenhouse gas’ — has been much less than predicted by the climate models Obama bases his policies on. For 20 years, the temperature has been virtually unchanged, in stark contrast to model predictions.