Book excerpt: Over the past fifty years, researchers have made extraordinary discoveries that help us to understand who we are, where we came from, and what makes us human. Discovering Us brings our shared history to life and tells the stories behind fifty of the most important human origins discoveries ever made. Illustrated with stunning full-color photographs, this book celebrates science, exploration, and the search for what it means to be human. The Leakey Foundation is a non-profit organization formed in 1968 to fund human origins research and to share discoveries. Since then, the foundation has awarded more than 2,500 grants for research in 110 countries. Discovering Us highlights the thrilling fossil finds, groundbreaking primate behavior observations, and important scientific work of Leakey Foundation researchers.