As solar energy costs drop below those of fossil fuels [1], its seems possible that for a few trillion, some kind of sequestration would be possible. One could

As solar energy costs drop below those of fossil fuels [1], its seems possible that for a few trillion, some kind of sequestration would be possible. One could imagine entire PV farms devoted solely to restoration of the atmosphere to pre-industrial levels, for example. In my opinion, climate change is a problem with an engineering solution. As a side note, the linked reference is a well argued version of the near future of transportation and energy. Highly recommended [1] Clean Disruption - Why Energy & Transportation will be Obsolete by 2030 - https://www.youtube.com/watch?v=Kxryv2XrnqM https://www.youtube.com/watch?v=Kxryv2XrnqM