directed and produced by Taggart Siegel ; produced by Teri Lang ; narrated & written by John Peterson ; produced in association with Independent Television Service (ITVS) ; produced by Collective Eye, Inc
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
Disneynature in association with Galatée Films Pathé, in association with Participant Media, a Galatée Films production, a Pathé-Notro films, France 2 cinéma-France 3 cinéma coproduction, in association with Canal+ and TPS Star, a film by Jacques Perrin and Jacques Cluzaud ; original screenplay, Jacques Perrin ... [and others] ; producers, Jacques Perrin, Nicolas Mauvernay
Paramount Pictures and Participant Media present ; an Actual Films production ; produced by Jeff Skoll, Richard Berge, p.g.a., Diane Weyermann, p.g.a. ; directed by Bonni Cohen & Jon Shenk