Solar might help with carbon emissions even at apex deployment, but there's a lot of carbon emissions otherwise. The objection to geoengineering is because tho

Solar might help with carbon emissions even at apex deployment, but there's a lot of carbon emissions otherwise. The objection to geoengineering is because those either involve large scale impacts to an already threatened biosphere (I do not accept than even 1% of biosphere threat due to solar energy reflection is understood), it often is pushed by the petroleum industry and they are the living embodiment of not caring about environmental impacts, and the cost of geoengineering is usually so high it begs the question why we don't invest in practical sustainablity. Ultimately, geoengineering is a delay. And what the petroleum industry in general economic powers that be due is delay cost as long as possible, while imposing costs upon other people. It is the essence of externality economics, which is to say industrial economics, which is to say economics. We are an economic world built on the religion of economics. That religion has no conception on a practical basis of environmentalism and sustainability. The fundamental problem externality economics, is that we cannot price the externalities on a practical basis. If you cannot price things, they do not exist to economics.