It’s no longer enough to believe that the climate is changing, and that man’s activities may have a role in it. In order to avoid an Amish-caliber shunning by the AGW cabal, you must set your hair on fire.

This comes from that great slayer of trees, the New York Times, which profiles Prof. John Christy of the University of Alabama, a pariah in his profession because he thinks many of his colleagues have overstated the case, and the potential consequences, of anthropogenic global warming (AGW).

Dr. Christy was pointing to a chart comparing seven computer projections of atmospheric temperatures above the United States with measurements taken by satellites and weather balloons. The projections traced a sharp upward slope; the actual measurements, however, ticked up only slightly.

Of course, the test of any theory is its utility in making predictions. But pointing out the discrepancies between theoretical predictions and actual data is just the kind of thing that gets Prof. Christy in hot water with those who think we’ll all be under water someday soon (or at least that Atlantic City may be renamed Atlantis City).

Christy, a heavily credentialed veteran climate scientist, actually edited a section of the famous 2001 UN report from the Intergovernmental Panel on Climate Change.  Now fellow academics rebuff his handshake offer.

“I walked over and held out my hand to greet him,” Dr. Christy recalled. “He looked me in the eye and he said, ‘No.’ I said, ‘Come on, shake hands with me.’ And he said, ‘No.’  ”