A rapid drop in oxygen and extraordinarily cold conditions would be just two of the deadliest consequences.

两个最致命的后果是氧含量的快速下降和极冷的条件。

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That is why the Eastern United States, Northern Europe and East Asia have experienced extraordinarily snowy and cold winters since the turn of this century.

这就是为什么美国东部，北欧，以及东亚从本世纪转变以来经历了异乎寻常的暴风雪及寒冷冬季的原因。

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Even as the ice recedes, the Arctic will remain extraordinarily cold, dark, remote, expensive and difficult to operate in.

ECONOMIST: Climate change