... it's possible to circumnavigate the North Pole.
The problem here, of course, is a positive feedback cycle - open water aborbs sunlight whereas ice reflects it. Thus the prediction that we will wave bye bye to the Arctic ice-cap entirely in summers.
Sorta sucks to be a polar bear.
Now watch what happens with the Antarctic ice cap (= sea level change) and with the possible release of Arctic methane deposits (= another positive feedback cycle). And I'm sorta wondering what the fuck happens to Thermohaline circulation with the icecap gone.
But, of course, global warming is all a myth and a conspiracy...