Krugman in high dudgeon.
Why would anyone go along with such things? Money is still the main answer: Almost all prominent climate deniers are on the fossil-fuel take. However, ideology is also a factor: If you take environmental issues seriously, you are led to the need for government regulation of some kind, so rigid free-market ideologues don’t want to believe that environmental concerns are real (although apparently forcing consumers to subsidize coal is fine).
Finally, I have the impression that there’s an element of tough-guy posturing involved — real men don’t use renewable energy, or something.
And these motives matter. If important players opposed climate action out of good-faith disagreement with the science, that would be a shame but not a sin, calling for better efforts at persuasion. As it is, however, climate denial is rooted in greed, opportunism, and ego. And opposing action for those reasons is a sin.
Indeed, it’s depravity, on a scale that makes cancer denial seem trivial. Smoking kills people, and tobacco companies that tried to confuse the public about that reality were being evil. But climate change isn’t just killing people; it may well kill civilization. Trying to confuse the public about that is evil on a whole different level. Don’t some of these people have children?