"Geo-engineering" to address climate change ?

See this. 

I agree, in general, that poorly thought out "geo-engineering" is a bad idea, but I have come to believe that the time to PREVENT climate change is probably already past, and serious, risky, probably even desperate MITIGATION measures (which will inevitably include this kind of 'geo-engineering') will probably be necessary. And if such efforts are possible, and the situation gets as bad as it likely will, someone in the World will do them, whether the big Liberal Democracies do it or not. Just the facts, ma'm.

That being the case, we had better make sure the science is there, and sound, so I actually think that research into what may work and what definitely doesn't should not be suppressed, but encouraged. What's important is to UNDERSTAND the possible dangers, as well as the possible benefits, and figure out how to control for them, now, while there's still time to do carefully limited and controlled experiments.