Humans first settled in the Arctic a mere 4,500 years ago, surviving by exploiting sea mammals and fish.

人类最早在4500年前定居在北极，靠捕捞海洋哺乳动物和鱼类生存。

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But in some waters, such as those of the Arctic, a warming will make conditions worse for phytoplankton.

但在某些水域，如北极水域，气候变暖将使浮游植物的生存条件变得更加恶劣。

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In some waters, such as those of the Arctic, a warming will make conditions riper for phytoplankton, and these areas will turn greener.

在一些水域，比如北极，气候变暖会使浮游植物生长成熟，而这些区域会变得更绿。

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He says a warmer Arctic and thinner sea ice changes the balance between the normally cold Arctic and warmer areas.

VOA: special.2009.05.05

The center says September Arctic sea ice is decreasing at a rate of more than eleven percent every ten years.

VOA: special.2009.10.27

Scientists say a little more ice covered the Arctic in September than in September of two thousand eight.

VOA: special.2009.10.27

That makes the Arctic a textbook illustration of the commons-despoiling tragedy that climate change is.

ECONOMIST: Climate change

To maintain a romantic notion of the Arctic as a place time has forgotten where life is simple and basic would be an insult to the people that call it home and be a mistake.

CNN: Sailing the Northwest Passage: mission accomplished

Why should the melting Arctic, a product of man-made global warming, be any different?

ECONOMIST: Climate change