Global warming is a natural phenomenon.
The temperature cycles going up and down are caused by the chabgeing albedo of the earth.
Each time the earth is being hit by a meteorite
causing a disturbance of the earth rotation subsequent volcanisms are invoked, causing enormous waterinjections into the atmosphere and snow and ice in the polar areas and the mountain areas. In this way the albedo of the earth will increase and th earth temperature will drop. The CO2 inreases also due to the volcanisms, but nevertheless the earth is first subjected to a glacial period and after that a global warming. We can conclude that concentration of CO2 is not a climat driver, since the earth albedo is already the climat driver.See also www.couldthesunriseinthewest.com/-