a WGBH production in association with the British Broadcasting Corporation for Nova ; written and presented by David McCullough ; produced and directed by Carl Charlson
a production of Long Bow Group, produced in association with WGBH/Frontline and the Independent Television Service ; produced and directed by Richard Gordon, Carma Hinton
a production of WGBH Boston and WITF, Harrisburg; produced by Beth Hager and Randall MacLowry ; written by Ken Emerson and Randall MacLowry ; director, Randall MacLowry
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
WGBH Educational Foundation ; produced and directed by Ben Loeterman ; written by Ben Loeterman and Alex Kotlowitz ; a Frontline coproduction with Ben Loeterman Productions, Inc
an Invision Productions Limited production in association with Heights Productions, Inc. and WGBH Boston, with the assistance of Lion Television Limited ; produced and directed by William Cran ; written by William Cran, Daniel Yergin ; executive producer, Michael Sullivan
a Firelight Media Production for American Experience ; a production of WGBH, Boston ; producer, Stanley Nelson ; writer, Marcia Smith ; director, Stanley Nelson
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