Frozen Planet: 1x7
On Thin Ice
A look at how scientists measure changes in the polar regions and what those changes mean for the animals and people who live there, as well as the rest of the planet.
1 - 1To the Ends of the Earth Oct. 26, 2011
1 - 2Spring Nov. 02, 2011
1 - 3Summer Nov. 09, 2011
1 - 4Autumn Nov. 16, 2011
1 - 5Winter Nov. 23, 2011
1 - 6The Last Frontier Nov. 30, 2011
1 - 7On Thin Ice Dec. 07, 2011
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