**NATIONAL BESTSELLER* ***A Pulitzer Prize Finalist** **and t** * *he definitive history of DARPA, the Defense Advanced Research Project Agency, from the author of the* New York Times *bestseller* Area 51*** No one has ever written the history of the Defense Department’s most secret, most powerful, and most controversial military science R&D agency. In the first-ever history about the organization, *New York Times* bestselling author Annie Jacobsen draws on inside sources, exclusive interviews, private documents, and declassified memos to paint a picture of DARPA, or the Pentagon’s brain, from its Cold War inception in 1958 to the present. This is *the* book on DARPA–a compelling narrative about this clandestine intersection of science and the American military and the often frightening results.