Frozen Planet S1, E4

Focuses on life and the environment in both the Arctic and Antarctic.

Cast:David Attenborough , Alec Baldwin , Chadden Hunter , Michael Kelem , Ted Giffords , Mark Linfield , Doug Anderson , Jeff Turner , John Aitchison , Mark Smith , Jeff Wilson , Doug Allan , Vanessa Berlowitz , Gavin Thurston , Jamie McPherson , Didier Noirot , Niobe Thompson , Miles Barton