You do know, don't you, that the global warming deniers insist that carbon-dioxide is not a pollutant because it's natural.
10. Mercury is the closest planet to the sun but despite this, it is not the hottest. The planet with the highest mean surface temperature is actually Venus – a consequence of its mostly carbon-dioxide atmosphere.
Okay. I'll concede that. And it still makes the planet hot, okay? (Just try surviving on Venus.)