This book analyzes the history and development of settlements-from the earliest periods in human history to the present day-from a Darwinian evolutionary perspective. At the foundation of the evolutionary model is the argument that the human capacity for complex communication and unique problem-solving ability have led to the formation and reality of the modern city and its scaled-up megacity status. While evolutionary theory forms the platform for the book's argument, general systems theory provides the operational framework for the organization and interpretations of each chapter. Throughout the book, the authors tackle various issues, questions, and possibilities regarding the future development and evolution of human settlements.