James Hansen was discredited long ago as a 'scientist'. Any scientist that thinks the planet is warming due to man's actions is not a scientist: they are money grifters, nothing more.

Like Margaret says below, water vapor is a much larger 'warming' gas. Burning clean fossil fuels like natgas and even gasoline through a catalytic converter helps the environment by adding the fuel of life: CO2.

Okay, so you're calling me a grifter then? Well you come off as a mindless hack to me. Honest suggestion, try reading scientific articles themselves as opposed to media interpretations where they strip the nuance, or better yet simple summaries of the science from neutral sources. Information coming through the filter of media warps everything and changes the arguments and the scientific points being made.

We can argue all day about the politics of climate change, and should, because you're not …