[DennisP]

> Talk about producing less disposable crap, driving less, flying less, and cutting military budgets

That comment illustrates the problem pretty well. We could do all those things and we'd still be way, way behind on what climate scientists say we actually need to do, to avoid disaster.

What we need to do is reduce emissions to zero in less than thirty years, with steep declines starting now. That's not just electric grids, it's all transportation, industry, direct emissions from steel and concrete production, agriculture, everything. And then we need to start pulling massive amounts of excess CO2 back out of the atmosphere. Going to the moon was trivial by comparison; without a breakthrough in cheap fusion or something we're not likely to achieve all this.

SRM isn't a solution but it could buy us a little time, before higher temperatures get the planet releasing gigatons of CO2 and methane without any further help from us.