sorry are you trying to suggest to me that CO2 does not have a greenhouse effect?
No, what I'm saying is that CO2 levels over the centuries cannot be established. It's a moot speculation. I've looked at all the yearly temperatures from my neck of the woods since 1980.
Nothing particularly consistent with change ( temp pretty much the same and a few years here and there hotter a few years and there colder back n forth with no real basleine change in percentage increase/decrease in average temp). Theres always going to be a trajectory, we'lll eventually have another ice age, some time in the far far we long dead future. I'm not worried about climate change because climate change, whether or not we have a small influence on it, creates the same results.
What if the world got substantially colder? Or substantially hotter with or without our influence? then what?
Lets just not pollute the air? climate change is what it is, it's minut and we'll be okay.
Also, we've had heatwaves before our industrial revolution.
history creates heatwaves and ice ages
ice caps melt
and they come back