Just 57 percent think there is solid evidence the world is getting warmer, down 20 points in just three years, a new poll says.... The poll was released a day after 18 scientific organizations wrote Congress to reaffirm the consensus behind global warming. A federal government report Thursday found that global warming is upsetting the Arctic's thermostat. Only about a third, or 36 percent of the respondents, feel that human activities — such as pollution from power plants, factories and automobiles — are behind a temperature increase. That's down from 47 percent from 2006 through last year's poll.Brainwashing and appeals to scientific authority only go so far when Joe Public's car is buried by snow in early October. No doubt the true believing scientific community will respond with calm reason and logical persuasion, by which of course I mean that we can look forward to the usual suspects shrieking about how stupid everyone is for daring to think for themselves and wistfully dreaming of PhDoctocracy.