[+/-] North Pole will be ice free by 2040

I guess this means in a few decades when I retire I can take a cruise to the North Pole:

Ice is melting so fast in the Arctic that the North Pole will be in the open sea in 30 years, according to a team of leading climatologists.

Ships will be able to sail over the top of the world and tourists will be able visit what was, until climate change, one of planet’s most inaccessible landscapes.

Researchers assessing the impact of carbon emissions on the world’s climate have calculated that late summer in the Arctic will be ice-free by 2040 or earlier - well within a lifetime....

Their finding may, however, already be out of date and something of an over-optimistic forecast, said Professor Chris Rapley, head of the British Antarctic Survey.

He said a recent study by the Global Carbon Project suggests emissions are rising more than twice as fast as in 2000 which is likely to speed up ice-loss even further.

"The study findings may be an under estimate of when the Arctic summer ice might be all gone," he said. "It could well be their assumptions are more optimistic than they might be."