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
produced and directed by Mark Anderson and Charles Bruce ; a coproduction by WGBH/Boston and Brook Associates in association with the BBC and Canal Plus
produced and directed by Jeffrey Bieber ; written by Barbara Jampel ; produced by WETA in association with NOGA Communications, Israel ; Washington Educational Telecomunnications Association