The Science of Science Fiction--Geoengineering

If you're interested in what the world might look like in a few decades and what we might be doing to it, check out this article from the New York Times. It discusses several books that in turn talk about what types of geoengineering might be done to deal with climate change. I haven't had a chance to read any of these books myself, but they sound interesting. If you're going to set a story in the future, it's worth knowing how the climate may change and what the implications could be. If humans do attempt a technological fix, what can we try, and what sorts of side effects are possible? The impression I get from this article is that we're not ready yet for geoengineering and that once we start (if we do), we have to maintain it. Again, the side effects may cause more harm than good. As the article suggests, perhaps the change we need isn't technological, but regulatory.