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  1. Glass Beads That Prevent Artic Ice From Melting Into Doom

    Glass Beads That Prevent Artic Ice From Melting Into Doom

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    119
  4. Polar bears: beautiful hunters from the Arctic - mini documentary

    Polar bears: beautiful hunters from the Arctic - mini documentary

    40
  5. USA National Parks: Lands of Wonder

    USA National Parks: Lands of Wonder

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    1