Our planet has had 4.5 billion years of climate change with NO man made CO2
Ice core temperature and CO2 reconstructions show temperature changes from natural causes lead CO2 changes.
1975 to 2021 had both CO2 and global average temperature with a strong positive correlation
Therefore, based on what we know so far (or think we know): The 4.5 billion years, through 1975, do NOT have evidence of a strong positive correlation of CO2 and average temperature.
Evidence of the alleged water vapor positive feedback, tripling the expected warming effect of CO2 alone, would have been runaway warming.
And that would have ended almost all life on our planet long ago, so no one would be alive today to debate the future climate.
Runaway warming did not happen.
So the endless climate debate continues, with one side unwilling to debate.
The climate alarmists say: "Don't provide us with any more climate information -- we are already too well informed".
In the past, CO2 levels were often higher than today, with no runaway warming.
What's the "best" level of CO2?
Our C3 photosynthesis plants used for food wuild prefer 800 to 1,000ppm, for optimum growth.
Optimum growth would support the most life on our planet.
Anyone who is anti CO2, at the current 420ppm, is also anti-life.
The water vapor positive feedback theory is wrong.
And without that alleged positive feedback, there is no climate emergency.
Without it there is most likely to be mild, harmless global warming.
Just like infrared gas lab experiments suggested.
Just as we have had since the mid-1970s.
We are very lucky to be living in an interglacial period, with a mild warming trend, that I would say started in the cold, late 1600s.
The climate on this planet is rarely better than it is today for humans, animals and plants.
We should be celebrating the wonderful climate.
But pesky leftists, who are never happy about anything, won't let us celebrate.
They keep predicting a coming climate crisis, for the past 64 years, getting louder and more hysterical each year, demanding that everyone to do as they say without question.
As the actual climate gets better and better.