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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.
我們將跟隨攝影機對處于最極端的季節的南極和北極作一次印象深刻的旅行，定時攝影機將對一群帝企鵝作仔細的觀察，向我們展示帝企鵝行為中包含的動力學原理。獨特的空中視角讓我們看到了一幅清晰的的畫面：由于全球變暖冰層融化，一只北極熊不得不游過一百公里，每次潛入水下兩分鐘之久，最后在筋疲力竭中去攻擊一群海象。
