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
an Invision Productions Limited production in association with Heights Productions, Inc. and WGBH Boston, with the assistance of Lion Television Limited ; series producer, William Cran
producer, Patrick Cameron ; director, Mark Stevenson ; a Cream production in association with Twin Cities Public Television, Inc, PBS, National Geographic and TVO