北极：地球最后的荒野 The Arctic: Our Last Great Wilderness

　　Imagine a place that is vast, wild and untouched, where some of the world's greatest wildlife spectacles unfold. The Arctic National Wildlife refuge, situated in the northeastern corner of Alaska, is the wildest place left in North America. A symbol of wilderness for the world. No one has truly ever seen it. "The Arctic: Our Last Great Wilderness" will feature the first-ever ci...