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CO2 is a greenhouse gas. The CO2 level since the industrial revolution has shot through the roof, well beyond any time in the past 400-800 thousand years (i.e. long before homo sapiens existed). This would be expected to increase Earth's temperature.
It's not debatable to reach any truth. It needs to be studied.
There is tons of existing evidence. What I hoped is that people could share information they know, and we could have a debate weighing that evidence in a scientific fashion.