For those who believe the advocates of global warming alarmism are exercising sober judgment, consider this passage from a new TIME article on the Greenland ice cap:

If all the ice on Greenland were to melt tomorrow, global sea levels would rise more than 20 ft. ? enough to swamp many coastal cities. Though no one thinks that will happen anytime soon, what keeps glaciologists awake at night is that thinking is not the same as knowing ? and no one can say with certainty what Greenland’s fate will be.

Writer Bryan Walsh implies that the discredited idea of a 20-foot sea-level rise is still a possibility, since ?thinking is not the same as knowing.? It?s too bad Walsh and his media colleagues are reluctant to apply the same principle to the alarmist predictions that emanate from untested ? and untestable ? climate models.

People like Roy Spencer offer a much more sober approach to the potential problem of global warming.