Richard Talbert is William Rand Kenan, Jr., Professor of History at the University of North Carolina, Chapel Hill, and the founder of its Ancient World Mapping Center (awmc.unc.edu). His books include The Romans from Village to Empire (Oxford University Press) and Barrington Atlas of the Greek and Roman World (Princeton University Press). His next book, Roman Portable Sundials: The Empire in Your Hand, is forthcoming from Oxford University Press in January.