While AGW is the culprit, the item which will break us, financially, is water.
As AGW warms the climate we already see rainfall changing places. We built our farms where the water was. Now that it is moving, do we relocate the farms or the water. Moving water is pretty well known technology, but requires a great deal of energy. In the past the sun supplied the energy for the water cycle with no help from us. It evaporated, it moved, it condensed. In a warmer climate we'll either need to help mother nature, or relocate our farms.
One thing about big cities is that they tend to grow upon the water. Ports. Now the water is relocating from the arctic and Antarctic ice fields to the oceans and eventually around our skyscrapers. Move the skyscrapers or hold back the water. Big, big bucks.
Here's the only saving grace. We can kick the can down the road to our grandchildren instead of solving it.
I'm thinking that they're going to be pissed if we ignore it.
Ahhhh yes water...the NEXT reeeeeaaallly big thing. Here's a clue for you, the fear mongers, of which you are a sock of one (probably olfraud) allways need to have some "dangerous" terriible thing to pluck the pockets of the unwashed. You guys would make the Borgias proud. Hell you'd OWN the Borgias!