• 21
    a BBC/Discovery Channel co-production in association with Wanda Firms ; series producer, Karen Bass ; produced by Justin Anderson, Peter Bassett, Joe Stevens, Hugh Pearson and Jeff Turner.
    [United States] : BBC Earth ; [New York, NY] : Distributed by BBC Worldwide Americas ; Burbank, CA : Distributed by Warner Home Video, c2009.
    DVD
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  • 22
    BBC Worldwide Ltd. ; British Broadcasting Corporation ; 2 Entertain Video Limited ; a Wildvision/National Geographic Channel US co-production ; series producer, Patrick Morris ; producers, Patrick Morris, Andrew Murray.
    [New York] : BBC Video : Distributed by BBC Worldwide Americas ; Burbank, CA : Distributed by Warner Home Video, 2007.
    DVD
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  • 23
    Canadian Broadcasting Corporation ; produced in association with Arte France ; executive producer, Michael Allder ; written and directed by Mark Johnston ; produced by Barbara Barde and Mark Johnston.
    Toronto, ON : CBC Learning, c2007.
    DVD
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  • 24
    2Entertain.
    Burbank, CA : Warner Home Video, c2007.
    DVD
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  • 25
    Burbank, CA : Walt Disney Home Entertainment : Distributed by Buena Vista Home Entertainment, 2006.
    DVD
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  • 26
    Burbank, CA : Walt Disney Home Entertainment : Distributed by Buena Vista Home Entertainment, 2006.
    DVD
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  • 27
    a Darlowsmithson production for Discovery Channel ; directed by Chris Lent.
    Santa Monica, CA : Family Home Entertainment : Distributed by Artisan Home Entertainment, c2002.
    DVD
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  • 28
    produced by Evergreen Films, LLC for the Discovery Channel ; producer, Meredith Eder ; director, Pierre De Lespinois ; writer, Alan Lindgren.
    Santa Monica, Calif. : Discovery Communications : Family Home Entertainment : Distributed by Artisan Home Entertainment, 2001. Widescreen version.
    DVD
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  • 29
    produced by fleisherfilm, inc. in association with Devillier Donegan Enterprises for Discovery Channel ; directed by Carol L. Fleisher ; written by Paula Deats & Carol L. Fleisher.
    Bethesda, MD : Discovery Communications ; Santa Monica, Cal. : Distributed by Artisan Home Entertainment, c2000.
    DVD
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