Comment Re:Alright already (Score 1) 401
The cost is immaterial if the benefit is making sure coastal cities aren't completely or partially submerged, wouldn't you say? I mean, relocating people in North America away from the coasts runs a monetary cost that is just incredible to contemplate.
Then you've got weird weather effects coming. Places that get too little rain to grow crops, or too much. Or just really unpredictable weather, so setting up agriculture is just extra difficult. That's going to cost money.
Even things like tourism suddenly take a hit--the Great Barrier Reef generates an enormous amount of revenue from tourism, but coral bleaching will slowly kill the reef off. Bye bye tourism dollars. Beyond that, the reef is also a natural barrier (duh) from large waves coming into the coast. AND it serves as a nursery for lots of different kinds of fish that we enjoy eating.
The costs associated with NOT acting (assuming that we can reverse any of these changes; climate change has momentum) are staggering. These are just a few things that I came up with off the top of my head. Check the Stern Review that someone else already linked you. The projected costs are in numbers so large that you're unlikely to be able to fully grasp them (I don't mean that as an insult; I can't fully grasp the enormity of the costs myself).