produced by Gregory Henry, Stephen Stept ; directed by Peter Schnall, Gregory Henry, David Shadrack Smith ; series producer, Stephen Stept ; written by Louis J. Darrow, Gregory Henry ; produced by Partisan Pictures for the History Channel
Disney ; produced in association with the National Science Foundation ; KCTS Seattle ; Rabbit Ears Productions ; directed by Michael Gross, Darrell Suto
produced and written by David Shadrack Smith ; directed by Peter Schnall, Gregory Henry, David Shadrack Smith ; series producer, Stephen Stept ; produced by Partisan Pictures for the History Channel
produced and written by Gregory Henry ; directed by Peter Schnall, Gregory Henry, David Shadrack Smith ; series producer, Stephen Stept ; produced by Partisan Pictures for the History Channel
a production of Matter of Fact Media, Inc. ; director, Christina Pochmursky ; producer, Vanessa Dylyn ; writer, Christina Pochmursky ; for CTV ; for National Geographic Channels International
produced and written by David Shadrack Smith ; directed by Peter Schnall, Gregory Henry, David Shadrack Smith ; series producer, Stephen Stept ; produced by Partisan Pictures for the History Channel
produced and directed by Judith Dwan Hallet, a Judith Dwan Hallet Production ; written by Michael Olmert, Judy Hallet ; cinematography/co-director, Reuben Aaronson ; produced by Hearst Entertainment, Inc. and Tele Images in association with the Arts & Entertainment Networks
produced by Sound Venture Productions & Barry Hobin Architect Productions in association with Life Network ; producers, Katherine Jeans, Ed Kucerak ; director, Katherine Jeans ; writer, Michael Laewen
a co-production of Thirteen for WNET.org and Mannes Productions, Inc. in association with ARTE/France, NDR, Australian Broadcasting Corporation with the participation of YLE ; Louise Rosen Ltd. ; a film by Elena Mannes ; executive producers, Elena Mannes, Margaret Smilow ; written and directed by Elena Mannes
by David Attenborough ; a BBC TV production in association with Australian Broadcasting Corporation, Turner Broadcasting System Inc. ; BBC Bristol ; executive producer, Peter Jones