No small themes for historian William McNeill: he is a writer of big, sweeping books, from The Rise of the West to The History of the World. Plagues and Peoples considers the influence of infectious diseases on the course of history, and McNeill pays special attention to the Black Death of the 13th and 14th centuries, which killed millions across Europe and Asia. (At one point, writes McNeill, 10,000 people in Constantinople alone were dying each day from the plague.) With the new crop of plagues and epidemics in our own time, McNeill's quiet assertion that "in any effort to understand what lies ahead the role of infectious disease cannot properly be left out of consideration" takes on new significance.