Agreed. Sadly, I believe the way things are going, geo-engineering will be required, not optional. At planerary scale, clearly it's a non-trivial problem, but

Agreed. Sadly, I believe the way things are going, geo-engineering will be required, not optional. At planerary scale, clearly it's a non-trivial problem, but we probably should be working on it much harder. I like your inspiration for setting such goals as carbon neutral in America. That's the kind of thinking we need.