I was mentioning on a thread about ten years ago, that a warmer planet is a wetter planet. And you could see an INCREASE in the glaciers at Antarctica because some areas there are so cold they get no precipitation. Warm it up a scad and there could be huge snowfall where there used to be none.
Imagine the oceans receding to the point where the continental shelves become inhabitable again, and the Sahara becomes forest again. Yes, AGAIN.
That was before Chuck Norris went there and lit a fart.