Jonas Salk, Revised Edition describes this respected immunologist's medical research and his lifelong efforts to promote scientific and human progress on a global scale. By chronicling Salk's story and his fight against polio, this engrossing book shows how scientists build upon the achievements of others while bringing their own perspective to the challenges they face in the laboratory and in the field. This revised edition brings readers up-to-date regarding Salk's final years and the current work of the Salk Institute. It also describes the global campaign to eradicate polio from the planet, since the fight against this disease has continued in developing nations.