LEE R. BERGER is the Research Professor in Human Origins and the Public Understanding of Science at the University of the Witwatersrand in Johannesburg, South Africa, and a National Geographic Explorer-in-Residence. He was a founder of the Palaeoanthropological Scientific Trust, today the largest nonprofit organization in Africa supporting research into human origins. The director of one of the largest paleontological projects in history, leading over 100 researchers in investigations of the Malapa site in South Africa, Berger is the author of more than 200 scholarly and popular works. His research has been featured three times on the cover of Science and has been named among the top 100 science stories of the year by Time, Scientific American and Discover magazine on numerous occasions. Berger has appeared in many television documentaries on subjects related to archaeology, paleoanthropology, and natural history, and has appeared widely on television and radio, including NPR's Talk of the Nation, Morning Edition, and All Things Considered and PBS's News Hour and Alan Alda's Scientific American Frontiers. Berger was named one of Time magazine's 100 Most Influential People of 2015 and 2016's Rolex National Geographic Explorer of the Year.
JOHN HAWKS is the Vilas-Borghesi Distinguished Achievement Professor of Anthropology at the University of Wisconsin—Madison. He is the author of a widely read paleoanthropology blog, johnhawks.net. Hawks graduated from Kansas State University in 1994 with degrees in French, English, and anthropology. He received both his M.A. and Ph.D. in anthropology from the University of Michigan. After working as a postdoctoral fellow at the University of Utah, he moved to the University of Wisconsin—Madison, where he is currently a member of the anthropology department, teaching courses including human evolution, biological anthropology, and hominid paleoecology.