Modern civilization faces a broad spectrum of daunting problems, but rational solutions are available for them all. This book explores the following issues: (1) Threats to the environment and climate change; (2) a growing population and vanishing resources; (3) the global food and refugee crisis; (4) intolerable economic inequality; (5) the threat of nuclear war; (6) the military-industrial complex; and (7) limits to growth. These problems are closely interlinked, and their possible solutions are discussed in this book.