We could stop polluting the earth.

But, as you said, CO2 is not a pollutant, does not cause global warming, nor cooling.

The "science" behind climate change has never been released for anyone else to scrutinize. And really, if there was a run-away event, then it would have likely happened all ready. On the contrary, the earth shows an immense ability for self regulation.

Taxing CO2 is just a tax on living with electricity.
It is about getting the people to pay more for less.

That people who believe in actual science are called science deniers... then what?