> Two things surprised me while reading the literature on this. First, we’re still not sure how exactly SO2 injection would impact rains. Second, what we do know is that we will be able to dial where we change the rain, because rain patterns are very sensitive to where we inject the SO2. We could increase rain where we need it and reduce it where flood risk is too high.<p>His enthusiams seems to have carried him right past this obvious contradiction. We don't know how this intervention will impact rains, but we'll be able to fine tune the impacts to be whatever we want them to be?