[oezi]

Your take is too fatalistic because any reduction in Co2 emissions is helpful. It isn't an all or nothing thing.

The cost estimates for eliminating Co2 emissions are also not very high. In the range of 1-2x total GDP. Would be doable if 3-5% of GDP is spent over the next 20-30 years.

I agree that all oil will be dug up and sold but there is a caveat: not at any price. If solar and wind continue their trajectory their dominance is inevitable.

[spwa4]

At this point I'd suggest big investments in research into geoengineering. For example, I can find research stating that aerosols will work, BUT that will have costs.

But which costs? I can only find a few studies about the truly stupid ideas (spreading sulphuric acid in the stratosphere will cool the earth ... then rain down. Yes I can understand why that would be bad. But any aerosol will work, of course. What goes wrong when spreading Lithium? Phosphate? Natrium? Magnesium?)