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冰封世界 Frozen
The polar caps have the most extreme seasonal contrasts, growing and melting vast ice masses, so wildlife adapts by annual migrations. The majority of Antartica is a vast barren permafrost. Only 3% of the coast and peninsular peaks are where life migrates to in the spring, for a short fertile summer, attracted by rich supplies of krill and fish. Only the Emperor penguin males breed 4 months in winter 100 miles inland. The Arctic has a more complete fauna which migrates back North from the continent. Here, the Polar bear is threatened because global warming defrosts its seal hunt platform ice too fast.
我们将跟随摄影机对处于最极端的季节的南极和北极作一次印象深刻的旅行，定时摄影机将对一群帝企鹅作仔细的观察，向我们展示帝企鹅行为中包含的动力学原理。独特的空中视角让我们看到了一幅清晰的的画面：由于全球变暖冰层融化，一只北极熊不得不游过一百公里，每次潜入水下两分钟之久，最后在筋疲力竭中去攻击一群海象。
