Global Warming (GW), or more precisely climate change, might actually be inexistent. The evidence in favor of the close linkage between carbon dioxide and global warming has not been clearly established. Nothing in the data supports the supposition that atmospheric CO2 is a driver of weather or climate, or that human emissions control atmospheric CO2. Carbon dioxide has no impact on atmospheric temperatures. The certainties of the misnomered greenhouse functions mask vast unknowns. The imperceptible GW may very well be natural, cyclical, chaotic, random. Human carbon emissions play a minor role compared to the Sun, albedo, cosmic rays, solar winds, CFCs, obliquity, ozone depletion, tectonic or volcanic activity, sulfur dioxides, 60-years AMO cycle, deep ocean heating, some known unknown (dragons perhaps), or some unknown unknown. Climate has always changed, and it always will. Our current period is not unprecedented. An alternative concept of carbon cycle reduces the anthropogenic influence to little. Temperature change precedes carbon dioxide changes. Science is never settled. Lots of theories.