For
It could quickly reduce global temperatures in emergencies.
Against
It has unknown risks and could damage ecosystems permanently.
Anonymous excerpts, translated where noted.
“It is kind of a last resort, but it's pretty much guaranteed that some country is going to try it”
“At this point geoengineering might be a necessity, so it'd be good to learn more of the actual science involved.”
“Risky geoengineering should be banned.”
“We don’t actually know what we’re doing. And honestly I’m not sure we can get there.”