Stratospheric Aerosol Injection is, unfortunately, a third rail in the climate community right now. The perception is that it's very dangerous due to the unkno

Stratospheric Aerosol Injection is, unfortunately, a third rail in the climate community right now. The perception is that it's very dangerous due to the unknown knock-on effects. Plus, the way it's depicted in sci-fi (e.g., Snowpiercer) doesn't help. We actually have a good understanding of what SO2 does in the atmosphere thanks to both volcanic eruptions and (until recently) the large amounts of particulate sulfur emitted from oceangoing ships. I think the more interesting question is how much risk we're willing to tolerate versus doing nothing at all. The risk of letting sea level rise continue unabated seems much worse to me than a (temporary!) intervention while we figure out full decarbonization.