This book defines genocide, distinguishing it from mass murder, war crimes, and other atrocities. It examines genocide across time and throughout human civilization and uses a variety of case studies to measure genocidal magnitudes in terms of their intent and motive, geographical extent, pace, method, participants, outcomes, legacies, punishments, and reparations. Written in an accessible manner for broad readership, it will be a valuable resource for students, scholars, journalists and others interested in the topic.