But as the hard data contradicts them, we know they're wrong. It doesn't matter of if PhD holder says the earth is flat, the earth will still be round. Well, yes, that's kind of the point. The current global warming isn't natural. It's caused by humans. It's not possible to explain the current fast warming without taking human greenhouse gas emissions into account. There is no natural explanation for the current fast warming. That's like saying that round-earthism is a religion. Facts aren't religious. Facts just are. It was your political/religious cult that politicized things. Denialism is restricted exclusively to right-wing extremist fringe political groups. If right wing politics vanished, denialism would instantly vanish too. In stark contrast, the real science crosses all political boundaries all across the world. If left-wing politics vanished, the science wouldn't change at all.