"The Arctic Ocean encircles with a belt of eternal ice the desert confines of Siberia and North America--the uttermost limits of the Old and New worlds, separated by the narrow, channel, known as Behring's Straits."

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Sandy was particularly destructive because it was prevented from moving back out to sea by a "blocking pattern" associated with the jet stream. There's debate about this, but one recent study suggested that melting sea ice in the Arctic may lead to such blocking.

— Nicholas D. Kristof