People of the Lake: Mankind and its Beginnings is a non-fiction book written by Richard E. Leakey and Roger Lewin. The book explores the origins of mankind and the evolution of human beings from their earliest beginnings. The authors draw on their extensive knowledge of anthropology and archaeology to present a comprehensive and engaging account of human evolution, from the emergence of the first hominids to the development of modern humans. The book is filled with photographs and illustrations that help to bring the story of human evolution to life.

The book is divided into several sections, each of which focuses on a different aspect of human evolution. The authors discuss the discovery of early hominid fossils, the development of stone tools, the emergence of language, and the spread of human beings across the globe. They also explore the social and cultural aspects of human evolution, including the development of art, religion, and music. Overall, People of the Lake is a fascinating and informative book that provides a detailed and engaging account of the origins of mankind.