Rising temperatures won’t “destroy” the planet, as fearmongers and celebrities like to say. But the evidence that carbon emissions are altering the planet’s ecology is too convincing to ignore. Conservatives who dismiss climate change as a hoax are making a spectacle of their ignorance.

But this doesn’t mean that we should mourn the death of cap-and-trade. It’s possible that the best thing to do about a warming earth — for now, at least — is relatively little. This is the view advanced by famous global-warming heretics like Bjorn Lomborg and Freeman Dyson; in recent online debates, it has been championed by Jim Manzi, the American right’s most persuasive critic of climate-change legislation…

Any attempt to legislate our way to a cooler earth, the argument goes, will inevitably resemble the package of cap-and-trade emission restrictions that passed the House last year: a Rube Goldberg contraption whose buy-offs and giveaways swamped its original purpose.