But perhaps their biggest sin, which is also the central point of the chapter, is pointing out that seemingly insurmountable problems often have cheap and simple solutions. Hence world hunger was largely conquered not by a massive effort at population control, but by the development of new and sturdier strains of wheat and rice. Hence infection and mortality rates in hospitals declined dramatically as doctors began to appreciate the need to wash their hands.

Hence, too, it may well be that global warming is best tackled with a variety of cheap fixes, if not by pumping SO2 into the stratosphere then perhaps by seeding more clouds over the ocean. Alternatively, as “SuperFreakonomics” suggests, we might be better off doing nothing until the state of technology can catch up to the scope of the problem.

All these suggestions are, of course, horrifying to global warmists, who’d much prefer to spend in excess of a trillion dollars annually for the sake of reconceiving civilization as we know it, including not just what we drive or eat but how many children we have. And little wonder: As Newsweek’s Stefan Theil points out, “climate change is the greatest new public-spending project in decades.” Who, being a professional climatologist or EPA regulator, wouldn’t want a piece of that action?