Funny, does anyone know how Greenland was formed do to "global warming"? IF the ice, the same ice that is STILL melting today, had not started melting eons ago, Greenland would STILL be a part of the North American Continent as opposed to the continental island that it is.
The earth is STILL in the "Last Ice Age", and if it continues to warm, we will see an end to that and have ice free poles, again, as they have been before.
Of course, open water at the North Pole is NOTHING new.
Ice at the North Pole in 1958 and 1959 ? not so thick | Watts Up With That?
Then again, the "Northwest Passage" was sailed through in the last century, in case some have forgotten history.
The ice waxes and wains, as it always has. There have been periods when there was no ice at the poles, and periods when the entire globe was covered in ice.
Nothing new here today.