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Frozen Planet: S1 E7
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.
S1 - E1To the Ends of the Earth Oct. 26, 2011
S1 - E2Spring Nov. 02, 2011
S1 - E3Summer Nov. 09, 2011
S1 - E4Autumn Nov. 16, 2011
S1 - E5Winter Nov. 23, 2011
S1 - E6The Last Frontier Nov. 30, 2011
S1 - E7On Thin Ice Dec. 07, 2011