"Sapiens: A Brief History of Humankind" is a book by Yuval Noah Harari that explores the history of the human species from the emergence of Homo sapiens to the present day. It examines key developments such as the Cognitive Revolution, the Agricultural Revolution, and the Scientific Revolution, highlighting how these changes shaped human societies and cultures. The book discusses the impact of shared beliefs, social structures, and technological advancements on human progress. Harari also raises questions about the future of humanity, considering the implications of genetic engineering and artificial intelligence on our species and the planet.