Be sure to catch the return of The Path and the debut of The Assassination of Gianni Versace: American Crime Story
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.
Examining shallow seas that lie above continental shelves, where sunlight can reach the seabed. Included: the rich and varied aquatic life of coral reefs. Narrated by Sigourney Weaver.
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