a NOVA production by the New York Times/Granada Factuals USA and Lone Wolf Pictures, Inc., for WGBH/Boston in association with Channel 4 ; directed by Kirk Wolfinger ; produced & written by Matthew Collins
a PBS digital presentation ; a Gemini Productions film for the WGBH/Nova Science Unit and Clear Blue Sky Productions ; written and directed by Gail Willumsen ; produced by Jill Shinefield, Gail Williamson
photographed by Lennart Nilsson ; written by Thomas Friedman ; directed by Mikael Agaton ; produced by Mikael Agaton, Thomas Friedman, Lars Rengfelt ; a coproduction between Swedish Television ... [and others] ; WGBH Boston