- The story of the Earth in 25 rocks, tales of important geological puzzles and the people who solved them, Donald R. Prothero
- The story of the dinosaurs in 25 discoveries, amazing fossils and the people who found them, Donald R. Prothero
- UFOs, chemtrails, and aliens, what science says, Donald R. Prothero and Timothy D. Callahan ; foreword by Michael Shermer
- Weird earth, debunking strange ideas about our planet, Donald R. Prothero