Published on the occasion of the exhibition of the same name hosted at the Tate Modern, London, October 10, 2007-January 20, 2008; Centre Pompidou, Paris, March 5-June 2, 2008; Solomon R. Guggenheim Museum, New York, June 27-September 12, 2008; The Museum of Contemporary Art, Los Angeles, October 26, 2008-January 25, 2009; and The Hirshhorn Museum and Sculpture Garden, Washington, D.C., February 26-May 17, 2009.