Comment by mirimir

We may well be forced into geoengineering. Because, by the time enough people/firms/governments are sufficiently motivated, it'll be too late for anything else. Except adapting, I mean. But anyway, CO2 capture is the obviously safest bet. Adding shitloads of iron to the oceans, or injecting shitloads of SOx into the stratosphere, are just a little too likely to have serious downsides. Or putting screens at L1, for that matter.