The sun.
Now, what's that got to do with the way CO2 is warming climate? After all, the sun's output has been decreasing, so that certainly can't be causing the climate to get warmer.
Because while CO2 is certainly a GHG, in the fantastically small amounts that it exists in the Earths atmosphere it is incapable of doing any of the magical things you claim it does. Water vapor is THE dominant GHG on this planet and it completely overwhelms any influence that CO2 could have had. That is born out by the fact that in spite of rapidly increasing CO2 levels there has been no corresponding increase in global temperatures.
The only way your hero's can make those claims is by falsifying data. And lo and behold one of their labs that they relied on was forced to close because of its PROVEN data falsification.
Either you are a person bereft of morals, or you are truly stupid. Without the CO2 in the atmosphere, the oceans would be frozen to the equator. When the CO2 was at 180 ppm, there were continental glaciers south of the Canadian Border. When the CO2 goes to 280, we have an interglacial, such as we are experiancing today. When it rises to 400+ ppm, we are in unknown territory.
And the liar here is you, and has been ever since you started posting. We have pictures of the glaciers around the world, from the 1880's to present, showing how there has been rapid melting of the vast majority of them. We have had satellite pictures of the ice caps since 1979, and they show the diminishing sea ice. And now we are seeing the effects of that on the jet stream. And you deny all of this. LOL