We worry about the northern ice cap melting. 

But it is happening at a much higher rate than expected. 

There's much more ice on the Antarctic continent. Scientists have drilled holes in the ice and in these core samples, have been able to trace these cycles of warmth and ice ages back to four hundred thousand years when all the ice disappeared from the South Pole. 

At that time sea levels rose about 400 ft. This is not the small cycles like we have seen 10 to 15 thousand years ago which affected the North Pole. 

Given that we have injected a horrendous amount of carbon dioxide in the last hundreds of years,  the fast rate of melting of the North Pole, and the appearance of cracks on the ice cap of the South Pole, it seems to me at least, that there's a higher risk that the South Pole ice will also be gone in 100 years. It may reappear in winter (for that pole) but all the ice will be gone by the summer.