I'm interested in your comments on the proposed use of jet fuel additives to introduce particulates into the upper atmosphere to partially block solar radiation as a mean of controlling warming. At an estimated cost of $100 million per year, it is by far the cheapest method.
I'm generally opposed to technological fixes that are implemented while underlying problems aren't fixed. That's why I favor controls on black soot emissions: a likely measurable effect on warming and a simultaneous health benefit.
Plus, there would have to be some good pilot-project (no pun intended) research on this idea to prove that it works and doesn't cause unintended bad environmental consequences. But I don't think the idea should be dismissed out of hand. I also don't think we're at a stage where it's necessary. I may think differently in 20 years.