Defining Events of the Twenty-First Century examines some of the most important moments in pop culture, science, and society in the last few decades. From influential pop musicians to technological breakthroughs to tragic man-made and natural disasters, readers will explore a wide variety of key events and people, the context surrounding them, and how they affected our world. Each volume includes diagrams to enhance readers' understanding of complex concepts, source notes, and an annotated bibliography to facilitate deeper research.