Many people today are under the incorrect assumption that carbon dioxide is the principal absorbing gas in the earth's atmosphere, and that it alone is responsible for global warming. They further assume the prinicpal source of trace amounts (350-400 ppm) of carbon dioxde we find in our atmosphere is principally from the combustion and use of fossil fuels, such as coal, natural gas, gasoline and aviaiton fuel, as energy sources. If you examine the science both rationally and objectively, you will discover that these assumptions are not only misleasing, but they are actually incorrect. From the discussions referenced below, if you measure and study the molar chemistry and physical composition of our atmosphere, you will discover the molar concentration of CO2 is most always in a range of 350400 ppm. "Water vapor, on the other hand, is much more abundant and has a very large variation in comparison to the concentrations of carbon dioxide. For example, the weight ratio of water to (dry) air almost all regions of the lower atmosphere is ~0.0065, or roughly 10,500 ppm. "Compared with CO2, this puts water, on average, at 2530 times the (molar) concentration of the CO2, but it can sometimes range during very dry or very humid occasions from a 1:1 ratio to >100:1." What many people today do not realize is water is a very strongly absorbing greenhouse gas, even more so than carbon dioxide. This scientific fact can easily be summarized by saying that "water accounts, on average, for >95% of the radiative absorption. And, because of the variation in the absorption due to water variation, anything future increases in CO2 might do, water will already have done." The next question is does the combustion and use of fossil fuels, such as coal, natural gas, gasoline and aviaiton fuel, as energy sources contribute substantially to the concentration of carbon dioxide in our atmosphere? Quoting from the report below, "In 1995, the Intergovernmental Panel on Climate Change (IPCC) data on the carbon balance showed ~90 gigatons (Gt) of carbon in annual quasi-equilibrium exchange between sea and atmosphere, and an additional 60-Gt exchange between vegetation and atmosphere, giving a total of ~150 Gt (3). The next matter is the impact of fossil fuel combustion. "Returning to the IPCC data and putting a rational variation as noise of ~5 Gt on those numbers, this float is on the order of the additionalalmost trivial (<5%)annual contribution of 56 Gt from combustion of fossil fuels". Conclusion: These facts means that carbon dioxide produced by fossil fuel combustion is very small when compared to the exchange between the sea and atmosphere, and between vegetation and atmosphere. Furthermore, because of its small (trace) concentrations in our atmosphere, CO2 cannot be expected to have any significant influence on the global warming we have experienced from causes that are purely natural in their origin.