Bullfrog Films presents ; A production of Earth Image Films for Nova ; WGBH Educational Foundation ; Producer, Christopher McLeod, Robert Lewis ; writer/director, Christopher McLeod ; for NOVA, senior producer, Kathleen Bernhardt
produced by Steven Latham, Larry Klein, Evan I. Schwartz ; written by Larry Klein and Evan I. Schwartz ; directed by Steven Latham ; a Steven Latham production for WGBH/NOVA
writer and producer, Neil Goodwin ; a Peace River Films production for The American Experience ; WGBH Educational Foundation, WNET/Thirteen and Peace River Films
co-produced by Frontline and Hedrick Smith Productions ; senior producer, Hedrick Smith ; producer, Marc Shaffer ; director, Rick Young ; guide written by Aruna Jain [and others]
a Frontline co-production with Hedrick Smith Productions ; WGBH Educational Foundation ; Frontline executive producer, David Fanning ; senior producer, Hedrick Smith ; producer, Marc Shaffer ; written by Hedrick Smith and Rick Young ; director, Rick Young
American Experience presents ; a Robert Stone film for American Experience ; WGBH Educational Foundation ; written, produced and directed by Robert Stone