Terence D’Altroy is the Loubat Professor of American Archaeology in the Department of Anthropology and the founding Director of the Columbia Center for Archaeology at Columbia University. He has conducted research in Missouri, California, Mexico, Peru, and Argentina since 1969. Most recently, he has been supervising research by his students in the Cuzco region and royal plantations in the jungles north of Machu Picchu. His research and publications, including 5 books and monographs and about 50 articles, have dealt primarily with the principles and practice of Inca politics, economics, militarism, and infrastructure. At present, he is completing the second edition of The Incas (Blackwell), a comprehensive overview of the empire, written for a broad audience.