a Frontline production with Kirk Documentary Group ; produced by Michael Kirk, Jim Gilmore, Mike Wiser ; written by Michael Kirk & Mike Wiser ; directed by Michael Kirk
produced by Paradigm Pictures in association with the Canadian Broadcasting Corporation ; produced and directed by Marrin Canell and Ted Remerowski ; written by Ted Remerowski
National Geographic Documentary Films presents ; a RadicalMedia production in partnership with Bloomberg Philanthropies ; directed by Sidney Beaumont, Michael Bonfiglio ; produced by Sidney Beaumont
George Rivera Productions, Inc. in association with Bob Gore Productions, Inc. ; writer, Jed Duvall ; producers, Mark Harris ... [and others] ; directed for television by George Rivera