That's a very vague prediction. It might not be worth doing anything at all, other than planning where to move cities to gradually as the need requires. If we pull out all the stops to prevent it now, we might have wasted our resources - spending more than we saved by preventing it. Almost every building that exists today was build in the past 100 years. We can surely keep up some of that work in the next 100 years.

Are there any more concrete numbers about how much destruction is expected from global warming? It's not infinite and it must be less than some amount of money.