Climate alarmists conjured a world where nothing was certain but death, taxes and catastrophic global warming. They used this presumed scientific certainty as a bludgeon against the skeptics they deemed "deniers" -- a word meant to have the noxious whiff of Holocaust denial. All in the cause of hustling the world into a grand carbon-rationing scheme. Any questions about the evidence for the cataclysmic projections, any concerns about the costs and benefits were trumped by that fearsome scientific "consensus," which had "settled" the important questions. A funny thing happened to this "consensus" on the way to its inevitable triumph, though:...