Heliocentrism. Didn't we clear this one up in the 16th century? Copernicus be damned, 20 percent of Americans were still sure in 1999 that the sun revolved around the Earth. Gallup, the pollster that conducted the study, gamely tried to dress it up by celebrating the fact that 'four out of five Americans know Earth revolves around the sun,' but we're not buying. Getty Images

By David A. Graham
24 August 2010 Chances are that by now you’ve heard about the Aug. 19, 2010, Pew poll that found that nearly one fifth of Americans (mistakenly) believe that President Obama is a Muslim. Perhaps you think that a terrifying outlier; or perhaps you’re a believer, and then you are in good company. Either way, you’re wrong: in fact, remarkably high numbers of Americans believe the most unusual things. Although the portion of poll respondents who believe Obama is a Muslim has risen recently, some of these oddball opinions contain more consistent numbers of believers. Here’s a sampling of the nuttiest.

America the Ignorant

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