If there were a Society of Global Warming Alarmists, Bill McKibben might get kicked out for being too much of a worry wart . . . You've probably seen those phone-message forms with boxes to be checked in ascending order of urgency ranging from "FYI—no need to return call" all the way up to "the future of Western civilization hangs in the balance." We might see that last category as light-hearted exaggeration, but it's no laughing matter to McKibben. In his jeremiad in today's LA Times literally entitled "Civilization's last chance," McKibben solemnly declares that "the world looks a little...