No idea if this is right or not (predictions are hard, idk), but it does seem to me that thinking about solar geoengineering as a break-glass-in-case-of-emergency thing, where the world turns to it in a panic as a last resort, is the absolutely worst way to go about it. https://twitter.com/kdrum/status/1359193839106289667

(To be clear, I can think of a bunch of plausible scenarios where solar geoengineering might make sense as a harm reduction tool, alongside deep emission cuts. I am not super optimistic that the decisions around this stuff will be great if it's suddenly seized on in a crisis.)

But I guess that's the dilemma. It's hard to imagine any collective decisions about geoengineering ever get made *until* everyone's in hair-on-fire crisis mode, at which point it is no longer a great environment for making thoughtful and wise decisions....

A lot more of interest in this thread (by a scientist who has thought about solar geoengineering as much as anyone out there): https://twitter.com/DKeithClimate/status/1359231717391757313