...or so says The Independent.
What they are talking about is the decline of Arctic sea ice over the last few years. Fair enough, it has, and (from memory) the trend is about in line with (pre|post)dictions.
One (one?) thing that looks odd in there is: the Arctic sea ice, the northern hemisphere's major "heat sink" that moderates climatic extremes. No. The arctic sea ice *isn't* a major heat sink. In fact, as the article makes clear a bit later... Sea ice reflects up to 80 per cent of sunlight hitting it but this "albedo effect" is mostly lost when the sea is uncovered. "We've exposed all this dark ocean to the sun's heat so that the overall heat content increases," he explained. Yes, thats right, *removing* the sea ice makes the ocean a heat sink, but with the ice in place its pretty reflective.