Jim Bell is a Professor in the School of Earth and Space Exploration at Arizona State University and President of The Planetary Society, the world's largest public space advocacy organization. Jim's research group at ASU primarily focuses on the geology, geochemistry, and mineralogy of planets, moons, asteroids, and comets using data obtained from telescopes as well as spacecraft missions to these worlds. Jim has a main belt asteroid named after him (8146 Jimbell) and has received the Carl Sagan Medal from the American Astronomical Society for excellence in public communication in planetary sciences. In addition to the book upon which this talk is based, he has also published six other popular science books about Earth and space science and exploration, including Postcards from Mars, The Space Book, The Interstellar Age, and, coming in April 2019, The Earth Book: From the Beginning to the End of our Planet – 250 Milestones in the History of Earth Science.