Climate change is a hoax.

Climate change is happening, but it’s not man-made.

Climate change is man-made, but doing anything about it would destroy jobs and kill economic growth.

These are the stages of climate denial. Or maybe it’s wrong to call them stages, since the deniers never really give up an argument, no matter how thoroughly it has been refuted by evidence. They’re better described as cockroach ideas — false claims you may think you’ve gotten rid of, but keep coming back.

Anyway, the Trump administration and its allies — put on the defensive by yet another deadly climate change-enhanced hurricane and an ominous United Nations report — have been making all of these bad arguments over the past few days. I’d say it was a shocking spectacle, except that it’s hard to get shocked these days. But it was a reminder that we’re now ruled by people who are willing to endanger civilization for the sake of political expediency, not to mention increased profits for their fossil-fuel friends.

About those cockroaches: Details aside, the very multiplicity of climate-denial arguments — the deniers’ story keeps changing, but the bottom line that we should do nothing remains the same — is a sign that the opponents of climate action are arguing in bad faith. They aren’t seriously trying to engage with the reality of climate change or the economics of reduced emissions; their goal is to keep polluters free to pollute as long as possible, and they’ll grab onto anything serving that goal.