By 2030, the Arctic’s Northern Sea Route could be ice-free and navigable for at least nine weeks each year, with a 10-week ‘shoulder season’, according to projections released today in the US Navy’s Arctic strategy. The Northwest Passage could be open for five weeks, with a six-week shoulder season; and the Bering Strait could be ice-free for a whopping 27 weeks a year, with up to 10 weeks of shoulder season.
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