There are scientists who don't want to close their eyes and who can look at the Vostok ice core records, seeing clear evidence for half a million years that temperature leads CO2 concentration ( and CH4 concentration). Other ice core studies provide similar clear evidence. Any person on a galloping horse would see that this provides us with very strong evidence against CO2 as the driver of climate changes. CO2 at .038% of the atmosphere, almost seems irrelevant or minuscule at best as when heated it expands, becomes lighter, rises in the atmosphere and consequently more easily gives heat away. Whenever it has been at high levels it hasn't stopped temperatures falling ...... i.e. it can be heading in quite different directions for significant periods.
