[Washington, D.C.] : Universal City, Calif. : National Geographic ; distributed by Vivendi Entertainment, 2013
Widescreen version.

[London, England?] : BBC Earth, 2017

2022
Widescreen.

Elk Grove Village, IL : Disney Educational Productions, 2004

Elk Grove Village, Ill. : Disney Educational Productions, 2003
Classroom ed. DVD.

Beverly Hills, Calif. : Twentieth Century Fox, 2017
Widescreen edition.

[New York, N.Y.] : A&E Television Networks, 2008

[London] : BBC Earth, 2021

[Arlington, Virginia] : PBS, 2017
Widescreen.

[Washington, DC] : National Geographic, 2010

Washington, DC : Screenscope Inc., 2009

[England] : Burbank, CA : BBC Video ; Distributed by Warner Home Video Inc., 2007

[Arlington, Virginia] : PBS, 2020
Widescreen.

[Arlington, Virginia] : PBS, 2017
Widescreen.

[Arlington, Virginia] : PBS Distribution, 2017

Princeton, NJ : Films for the Humanites & Sciences, 2005

[Arlington, Virginia] : PBS, 2022
Widescreen.

[Arlington, Virginia] : PBS, 2015
Widescreen.

[United States] : PBS Distribution, 2012

[S.I.] : New York : Discovery ; Distributed by Cinedigm Home Entertainment, 2014