
Shermer and Prothero discuss: flat earth theories and how we know the earth is round • hollow earth theories and how we know it’s not hollow • the return of Ptolemy and an earth-centered solar system model (and how we know it’s wrong) • how science deals with anomalies and fringe claims • Were humans in the San Diego area 130,000 years ago? • flood myths • the age of the earth and how geologists determined it, and more…