SuperFreakonomics: Global Cooling, Patriotic Prostitutes, and Why Suicide Bombers Should Buy Life Insurance is the second non-fiction book by University of Chicago economist Steven Levitt and The New York Times journalist Stephen J. Dubner, released in early October 2009 in Europe and on October 20, 2009 in the United States. It is a sequel to Freakonomics: A Rogue Economist Explores the Hidden Side of Everything.