I wonder if we'll see significant settlement of the arctic for the first time, as the century continues. They have reasonable solar potential 6 months of the year, water is easy to come by, and it's obviously plenty cool for things like data centers and adapting to climate change. I can imagine something like the Mongolian bitcoin mines, but in a newly founded community centering around it on an ice cap, and surrounded by a giant solar farm. Maybe they'd ship equipment between hemispheres according to season.