[dingnuts]

I think the biggest concern with something like releasing SO2 as a geoengineering project, which needs, quoting someone else in the thread "very little" to be released to have a big effect, the concern is over-correction or unforeseen effects caused by an insufficient understanding of the system as a whole.

Don't want to accidentally start an ice age by trying to prevent a hothouse planet from forming :P

[lamontcg]

And we want to stop releasing CO2. We don't want to wind up charging onwards to 1,000 ppm CO2 just because we released enough SO2 to compensate for the climate change.

[darkmarmot]

Especially since human brains suffer significant cognitive effects above 1,000ppm.

[Gud]

Sounds like a self correcting problem to me. At what ppm levels are humans too stupid to support an industrial civilization? Full speed ahead...

[ipython]

Eh, don't worry, the rich among us will bottle up the 'good' air and, well, just watch the clip from the documentary "Spaceballs" - https://www.youtube.com/watch?v=Lz0xULQIaSU

[blooalien]

"SnowPiercer" here we come...