Why you should watch Pose, Big Brother and more
Frozen regions of the world, including the poles and the tops of mountain ranges, are explored. Featured: organisms that can survive in the coldest conditions on Earth. Narrated by Sigourney Weaver.
Grasslands, prairies, plains and savannas are examined, including areas of Mongolia, Africa and Papua New Guinea. Also: Arctic tundra.
Jungle ecosystems are examined. Included: animals indigenous to jungles, including primates and birds, and the unique plant life of these rich environments. Narrated by Sigourney Weaver.
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