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Published online 18 September 2007 | Nature | doi:10.1038/news070917-3
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Arctic sea ice at record low
Open waters in northern ocean highlight massive melting.
Even for a society jaded by the continual breaking of climate records, the retreat of Arctic ice this year is stunning.
Sea-ice extent — the total number of 25 x 25 kilometer square sections of ocean covered by at least 15% ice — in the Arctic Ocean melts from about 16 million km2 every March to a minimum sometime in September or October, the exact date normally only being evident in retrospect.
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