There are scientists that believe we are in a co2 drought and more would be very good for the environment. There us evidence that historic co2 levels were much higher (and much lower), and that levels operate up and down within limits. This was before SUVs.
Co2 levels may follow temp differences instead of causing them.
No one really understands it all, but many sure as hell want to use the fear to create taxation and powerful government systems.
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