[dr_dshiv]

The data seem to suggest an urgent need for solar radiation management because reducing fossil fuel consumption to a negative value isn't really a viable plan, as it turns out. Instead, we will have to use technology to solve the problem, surprise surprise.

Calcium carbonate has the benefit of de acidifying the ocean.

[pstuart]

> reducing fossil fuel consumption to a negative value isn't really a viable plan, as it turns out

That seems to be the case politically. Technically it could be done with the only variable being the time to do so.

[hamilyon2]

Nobody tried planet-scale geo engineering before, as far as I understand the opinions on it's effectiveness vary.

[holowoodman]

We did try planet-scale geo engineering. It has worked so far, predictions were met. Heating through CO_2 and other heavy molecules works as predicted. Cooling through Sulfur compounds works even better than predicted, as evidenced by the sudden rise in temperatures after cessation of sulfur-rich fuels.

And in the end, all solutions we can attempt are technical and in some aspect untested. We just assume that the consequences of some of those solutions are small enough, but none have really been tested at scale.