ROBERT ZUBRIN is a recipient of the National Space Society's prestigious Robert A. Heinlein Award and is the author of the bestselling The Case for Mars, as well as Entering Space, Energy Victory, and First Landing. He is the president of the Mars Society, an international organization committed to furthering the exploration and settlement of the Red Planet. With a doctorate in nuclear engineering and a master's in aeronautics and astronautics, Dr. Zubrin led the ?Mars Direct? project at Martin Marietta Astronautics (later Lockheed Martin) and is the founder and president of the engineering firm Pioneer Astronautics.