written and produced by Fred Peabody ; producer, Bruce Nash ; created by, Bruce Nash ; produced by Actuality Productions ; History Television Network Productions
produced by Bill Jersey & Michael Schwarz ; writers, Alex Beckstead, Jason Cohn, Bill Jersey, Max Salomon, Michael Schwarz ; Catticus Corporation ; Quest Productions ; Kikim Media ; KQED presentation
written and produced by Beata Ziel ; producer, Bruce Nash ; created by Bruce Nash ; produced by Actuality Produtions, Inc. for History Television Networks Productions
a documentary by Fox Wilmar Productions in association with The American University Center for Environmental Filmmaking ; director/writer John De Graaf ; producer, Hana Jindrova
Speak-it Films in association with Fulcrum Productions ; filmed, directed, and produced by Marc Francis & Nick Francis ; executive producer, Christopher Hird