Alan Walker is Professor of Anthropology at Pennsylvania State University. A Royal Society and MacArthur fellow, he is a member of the National Academy of Sciences and the American Academy of Arts and Sciences. In 1996, he and Pat Shipman won the prestigious Rhone-Poulenc Award for The Wisdom of the Bones.
Pat Shipman is a professor of anthropology at Penn State University. Coauthor of the award-winning The Ape in the Tree, she writes for American Scientist and lives in Moncure, North Carolina.