written, produced, and directed by Christine Lesiak ; co-producer/director, Annie Mumgaard ; a Nebraska ETV Network production for American Experience ; WGBH Boston ; PBS
Talking Evolution Productions ; Prairie Starfish Productions and G7 Animation present a Randy Olson film ; producer, Ty Carlisle ; written and directed by Randy Olson
produced by Joseph McMaster, Gary Johnstone, Vanessa Tovell ; directed by Gary Johnstone, Joseph McMaster ; written by Joseph McMaster ; a production by NOVA and Vulcan Productions, Inc. in association with The Big Table Film Company