More recent geologic studies documented deglaciation and the existence of ice-free areas throughout major coastal areas of British Columbia, Canada, by 13,000 years ago.

更多近期的地质研究证明了13000年前的冰川消退现象和整个加拿大不列颠哥伦比亚省主要沿海地区内无冰区的存在。

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Recent evidence favors a rival to the long-standing theory that the Americas were colonized 11,000-12,000 years ago by people migrating south from Beringia along a midcontinental ice-free corridor.

最近的证据支持了一个与长期存在的理论对立的观点，该理论认为，在1.1万至1.2万年前，美洲是由从白令海峡沿中大陆无冰走廊向南迁移的人殖民的。

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Provisions available in local shops have to be flown into Nunavut on one of the most costly air networks in the world, or brought by supply ship during the few ice-free weeks of summer.

当地商店里的供应品必须通过世界上最贵的航空网路之一空运到努勒维特，或者在夏季中少数几个无冰周里通过补给船来购买。

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He warns that the Arctic Ocean could be free of ice during future Northern Hemisphere summers.

VOA: special.2009.10.27

By the mid-2030s, scientists have predicted that the Arctic will be ice-free for at least one month of every summer, which will expand to two-to-three ice-free months by around mid-century.

FORBES: U.S. Navy Scrambles for Piece of Arctic Pie

The WMO reported that the seasonal minimum, reached on September 9, was 35% below the 1979-2000 average and the second-lowest on record with both the Northwest and Northeast passages ice free for periods during the summer.

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To the casual reader, the shrinking area of white seemed to signify disappearing ice, so the graphic may have given a totally misleading impression that Greenland had become ice-free - even where the ice is 3km thick.

BBC: Harrabin's Notes: Frozen assets