And what happened between the five ice ages asshole? Guess what? It warmed up!
Why yes, it did. And the CO2 in the atmosphere went from 180 ppm during the continental glaciation, to 280 to 300 ppm in the interglacial. That cycle was repeated for the prior glaciations. However, today, thanks to the burning of fossil fuels, the CO2 level is over 400+ ppm.
Now given you denial of reality in all other spheres of life, one can but expect that you will continue to deny the reality that the scientists are showing us the evidence for. But the sane citizens of this nation are taking action to at least remedy some of the effects of the increase in GHGs, and reduce the emissions of these gases.