A collection of essays by a Nobel Prize Laureate on a wide range of problems facing the world, and the role of scientists in solving them. Kendall was one of a group of physicists who founded the Union of Concerned Scientists (UCS) and is currently chairman of its board of directors. UCS is today a voice of authority in US government science policy, particularly with regard to environment issues. Together, these essays represent both the successes and failures of science to impact public policy, and offer practical guidelines for involvement in science policy. They are roughly chronological,...