Anthropologist and best-selling author Wade Davis has traveled the world, befriending indigenous peoples on every continent and engaging in their spiritual lives and practices. To him, no culture is primitive--every daily habit, every ritual, every ceremony expresses the human genius. In this book he takes us into the heart of 20 different world cultures, from the ancient salt mines of the Sahara to the icy world of the Inuit, from the pastoral nomads of Mongolia to the dreaming Aboriginals of Australia. Through sensitive text and revealing photos, enter what Davis calls our "ethnosphere": the extraordinary matrix of cultures thriving on this planet.