“The back-to-back snowstorms in the capital were an inconvenient meteorological phenomenon for Al Gore,” cracks The Washington Post’s Dana Milbank. The largest snowfall in DC’s recorded history unleashed a blizzard of ridicule of “global warming.” Milbank points out that the storms do not in fact disprove the various dire forecasts. Some theorists of climate change have said that a general trend of warming would be punctuated by extreme weather events, so the likes of what we have experienced this winter may not contradict that. But, as Milbank points out, climate alarmists have themselves leaned so heavily on anecdote—a glacier losing mass here, a species altering its habits there—that they have left themselves open to refutation in kind—in this case, millions upon millions of white, flaky anecdotes piling up beyond endurance all over Washington.

These crystalline messengers were not the only thing chilling climate alarmists this winter. There were also new revelations of errors in the work of the Intergovernmental Panel on Climate Change, the UN-sponsored body whose 2007 report was widely heralded as the capstone on the global-warming debate. Now an embarrassed IPCC conceded that some of the sources on which it relied were amateurish and others were from the world of advocacy rather than scholarship. It also confessed to “typos,” notably in its assertion that the glaciers of the Himalayas were melting so fast that they might disappear entirely by 2035, a mere 25 years from now. The year should have read 2350, a not-so-mere 340 years from now, far enough into the future for many other things to intervene. And even this forecast for 2350 turned out to have been borrowed from an earlier UN study, which got it from an admittedly non-scholarly source.

This comedy of errors points to the question of why any entity that is sponsored by the UN should be taken seriously. This is the same UN whose Conference on Trade and Development taught poor nations that to escape poverty they needed to cut themselves off from any trade with or investment from rich nations. (As a result of widespread adoption of this topsy turvy advice, the developing world lost an entire generation to stagnation.) It is the same UN whose Human Rights Council categorically refuses to utter a word of reproach aimed at China or Saudi Arabia or Syria or Libya or any of the world’s most tyrannical regimes. The same UN whose oil-for-food program enabled Saddam Hussein to build new castles, stockpile weapons, and buy influence while hungry Iraqis received only food long past its expiration date. The same UN that invited Bosnian Muslims to take refuge in the “safe haven” of Srebrenica, then disarmed them, and abandoned them to their Serbian predators. The same UN whose peacekeepers in Africa exacted payment in the token of sexual favors from the women and children they were sent to protect. This is the UN on which we will rely for the last word on the fate of the Earth?

These two apotheoses of alarmism—Al Gore and the IPPC—jointly won the Nobel Peace Prize. Gore also won two Academy Awards for An Inconvenient Truth, his 2006 film designed, says its director, Davis Guggenheim, to bring “everyone [to] the edge of their seats, gripped by his haunting message.”

The very title of Gore’s film leads us to the deepest issue here. The chief newspaper of the Soviet state was also called, Pravda (“Truth”). But those who truly seek truth know that they can never be certain they have found it. Gore, in contrast, exemplified the conceit of the alarmists that “the science is settled.” Science, however, is less a body of knowledge than a way of knowing, and one of its principles is that conclusions are always provisional, awaiting further reinforcement, refinement, or contradiction. If it’s settled, it’s not science.

Subjects that can be explored through controlled laboratory experiments tend to lend themselves to more robust conclusions. Other subjects may also be investigated in a scientific spirit, but conclusions usually must be more tentative.

Climate science, which entails the intersection of several areas of inquiries that must be explored outside a laboratory, is unlikely to yield much certainty. If Gore were more devoted to truth, he would have titled his film, A Troubling Hypothesis. This might have won no awards from Oslo or Hollywood. But it would have left him much less susceptible to the ridicule of the heavens.