The study of evolution has uncovered invaluable information about many aspects of human behavior and culture, from the physiology of our bodies and brains to the development of hunting, technology, and social groups. But an understanding of the intangibles of human experience, especially religion, lags far behind. Attempts to discover the source of religiosity through genetic analysis and neuroscience have so far yielded intriguing but incomplete insights. 'Evolving God' represents an exciting breakthrough. Drawing on her own extensive investigations into the behavior of our closest primate relatives and the most up-to-date research in archaeology, anthropology, and biology, Barbara King offers a comprehensive, holistic view of how and why religion came to be. King focuses on how modern humans, our ancestors, and the Great Apes relate to one another socially and emotionally, tracing the growing complexities of communication through the course of evolution. With increased brain capacity, she shows, the scope and nature of socio-emotional ties expanded from one-to-one relationships to group relationships (families and communities), and eventually to connections with the long-dead ancestors, animal spirits, and 'higher beings.' Her incisive, highly readable narrative takes readers from the earliest common relative of human and apes (before 6 million years ago), through the Neanderthal period and the Stone Age, to the dawn of religion in primitive human societies.