Besides morality and compassion (and who cares about that, amiright? /s), there's an enlightened self-interest here. If, e.g., droughts and floods make a vario

Besides morality and compassion (and who cares about that, amiright? /s), there's an enlightened self-interest here. If, e.g., droughts and floods make a various regions holding, say 1 billion people unable to sustain themselves, those billion people are going to be forced to try to move to some place they can survive. That may cause us a lot more than $200 billion worth of trouble. (Not that $200 billion is going to counteract the effects of climate change, but they idea is that it would substantially mitigate the most serious issues. I have no idea if that's true under this plan or possible under any plan, but that's the idea.)