We were looking for grayling, a breed of fish found only in cold subarctic waters.

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And with subarctic temperatures that often drop below zero, staying active outdoors is out of the question.

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In reality, global warming is likely to benefit most Arctic and subarctic species.

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The seven teams went through a Subarctic Survival Exercise.

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The 25 men and women on his team must survive the island's subarctic temperatures for months while they live in tents, repeatedly uproot camp as they move around the island and maneuver helicopters carrying heavy containers of bait, often buffeted by strong winds.

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