Why are geoengineering efforts not more popular? I thought that what Bill Gates and co were doing with the chalk dust in the atmosphere was a good idea. I think

Why are geoengineering efforts not more popular? I thought that what Bill Gates and co were doing with the chalk dust in the atmosphere was a good idea. I think there are myriad ideas along these lines that would go a long way towards combating climate change while also not killing a large swath of economic activity.