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500 kilometers west, lands formed hundreds of millions of years ago are home to creatures little changed since prehistoric times.
此地以西五百公里數億年前形成的陸地上，生活著一種從史前時代就幾無變化的生物。
Scandinavia's tallest peaks are found on the earth's largest island, Greenland, where some of the world's most experienced climbers are heading for the hills.
斯堪的納維亞的最高峰座落于地球上最大的島嶼格陵蘭島上，一群世界上最有經驗的攀登者正在向山上行進。
Muskoxen are made for the mountains.
麝牛天生就屬于這片山區。
A soft brown fleece, several times warmer than wool and shaggy overcoats, makes the animals resistant to wind chills of minus 60 degrees.
柔軟的棕色絨毛比羊毛要暖幾倍，形成了蓬松的外衣使其可以抵擋零下六十度的風寒。
Their winter wardrobe allows them to adopt unusual survival strategy.
有了這身冬季的行頭，它們就可以采取不尋常的生存策略。
Instead of taking cover in high winds, they spend much of the winter on high ground.
疾風中，它們并不尋找隱蔽之所，反而在高處迎風而立度過冬季的大部分時間。
Up here, driving winds blow away most of the snow, making it easier for these plant eaters to get up the grasses underneath.
山上，大部分的雪被暴風吹走，使得這些食草動物更容易吃到雪下面的草。
They gain just enough energy to keep them moving and keep warm.
這樣獲得的能量剛好可以維持體力以及保暖。
No animal can survive here without the right credentials.
沒有絕對的實力就無法在此生存。
On the low plains of Iceland, a remote huddle of more recent immigrants emerge from the icy canvas.
冰島的低處平原上遠遠地，一群時間較短的移居者出現在冰冷的雪面上。
The Icelandic horse bears testimony to the island's stormy past.
冰島馬見證了這個島嶼暴風雪的歷史。
The ancestors of these animals were brought here in open boats by Vikings over a thousand years ago.
它們的祖先是一千年以前維京人用敞艙船運來的。
They endure a climate that will kill most of their mainland relatives.
它們忍耐了本土親戚們無法忍耐的氣候。
In just a hundred or so generations, they have developed into a unique breed adapted to some of the harshest conditions on earth.
只經過大約一百代，它們就進化成了一個特有的品種，適應了地球上最艱苦的環境。
During these winter months, days are short.
冬季里白天很短。
Fading daylight forces temperatures even lower.
消褪的日光使氣溫降得更低。
The darkening skies bear witness to a very different storm.
漸暗的天空上演著完全不同的風暴。
