A third of the world's people are in the midst of the largest population move in human history, as the last of the word's rural populations abandons agriculture and moves to the urban areas of the developing world and of the wealthy West. Both a groundbreaking work of reportage and an exciting, vivid travelogue, "Arrival City" sees award-winning journalist Doug Saunders offering a detailed tour of the key points in the Great Migration, and considers the actions that have turned this enormous population shift into either a success or a violent failure.