https://rclutz.com/2021/11/10/david-stockman-resist-the-greenmaggen-part-2/"During our Holocene epoch, for the past 11.6 thousand years, earth’s climate has changed often with multiple periods, both warmer and and cooler than the present. The modern warming period since 1850 was preceded by the Medieval, the Roman, and the Minoan warming periods–each was cooler than the previous, and all of them warmer than the present. "
Its not CO2