Polar bears depend on the Arctic sea ice for survival. In the cold, frozen tundra, deep snow and ice, they hunt for food, find mates and teach their young survival skills. But, it turns out that polar bears can also teach us humans a lot about the long-term health of the Arctic environment.

中文翻译：

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家是冰的地方：北极熊向我们介绍了北极

北极熊赖以生存的北极海冰。在寒冷，冰冻的苔原，深厚的冰雪中，他们寻找食物，寻找伴侣并教他们年轻的生存技能。但是，事实证明，北极熊还可以使我们了解很多有关北极环境的长期健康的知识。