Through forceful storytelling and wry insight, Levitt and co-author Dubner show that economics is, at root, the study of incentives--how people get what they want, or need, especially when other people want or need the same thing. In Freakonomics, they set out to explore the hidden side of...well, everything. The inner workings of a crack gang. The truth about real-estate agents. The myths of campaign finance. Freakonomics establishes this unconventional premise: If morality represents how we would like the world to work, then economics represents how it actually does work.

The Spanish flu of 1918-1920 was one of the greatest human disasters of all time. It infected a third of the people on Earth--from the poorest immigrants of New York City to the king of Spain, Franz Kafka, Mahatma Gandhi and Woodrow Wilson. But despite a death toll of between 50 and 100 million people, it exists in our memory as an afterthought to World War I. In this gripping narrative history, Laura Spinney traces the overlooked pandemic to reveal how the virus travelled across the globe, exposing mankind's vulnerability and putting our ingenuity to the test.