I think that in another 50 years ahead Once the summer weather is very hot and the winter is cold, even more than before. The ice via the North Pole and the South Pole, the melt water amount.
I think that the next 50 years. Upon entering the summer weather is very hot. And in winter can be cold even more than ever. Ice on the Arctic and Antarctic melting ever-increasing amount of water.
I think the other 50 years. When entering the summer weather will be very hot. And in the winter cold, even more than the original. The ice on the north pole and the South Pole melts the water increases.