The information and conclusions reached by author Jared Diamond in "Guns, Germs and Steel" (GGS) are ambitious, insightful, and far-reaching. GGS examines the last 13,000 years of world-wide human history in detail. It asks and postulates on major questions of success and failure of various cultures and groups - the evolution from hunter-gatherer to modern societies. Its clear to me why the GGS won the Pulitzer Prize and is cited by so many people. Diamond's book is a sweeping tome of human development through the eyes of an eminent scientist. He marshals his own qualifications as a geographer, physiologist, and behavioral ecologist; along with anthropology, linguistics, epidemiology, and archeology to produce a superb scientific work.