Book excerpt: Seventh-Day Adventists, Melanesian cargo cults, David Koresh's Branch Davidians, and the Raelian UFO religion would seem to have little in common. What these groups share, however, is a millennial orientation-the audacious human hope for a collective salvation, which may be either heavenly or earthly. The Oxford Handbook of Millennialism offers readers an in-depth look at both the theoretical underpinnings of the study of millennialism and its many manifestations across history and cultures.