Every two years, the National Science Foundation releases a report on the state of science in the U.S. and around the world. It includes survey data for how Americans answer basic scientific questions such as "Does the Earth go around the Sun, or does the Sun go around the Earth?" and"True or false: electrons are smaller than atoms."The results of the most recent survey, conducted in 2012 with more than 2,200 adults, have just been released.
http://www.theatlantic.com/education...cience/283864/

A warning: make sure your hands have nothing in them because it is impossible to read this without at least one facepalm.