Tundras aren’t going to be all that liveable just because the temperature is a bit nicer. They’ll still get very dark in the winter. Like 24-hour darkness, in some of it. Some people thrive, some people cope, some people go batshit crazy when daylight hours drop below about 4 hours a day.
That’s actually the easy part. Most tundra is sitting on top of permafrost. I worked on low latitude tundra for one summer and if my experience there is representative, melting permafrost is going to turn a lot of tundra into swampland for a long time.
Even if I’m wrong about the tundra turning into swampland, there isn’t really all that much room. Good luck cramming a few billion people above 55 or 60 degrees latitude.
The tree line is moving pole-wards thanks to global warming; the gain is less than what’s lost by the desert line moving pole-wards, but it’s something.
Good luck cramming a few billion people above 55 or 60 degrees latitude
Realistically, you need less than 1m² of terrain per person if you stack them in high enough buildings. Look at how China is doing it.
I’m glad I’m old enough to not have to consider living at the population density you suggest. I find the population density of Saskatchewan to be quite enough. I lived in a small city (Saskatoon) for 40 years and the last 10 were flat out miserable. The first 30 were tolerable only because we escaped to nature every weekend.
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Tundras aren’t going to be all that liveable just because the temperature is a bit nicer. They’ll still get very dark in the winter. Like 24-hour darkness, in some of it. Some people thrive, some people cope, some people go batshit crazy when daylight hours drop below about 4 hours a day.
That’s actually the easy part. Most tundra is sitting on top of permafrost. I worked on low latitude tundra for one summer and if my experience there is representative, melting permafrost is going to turn a lot of tundra into swampland for a long time.
Even if I’m wrong about the tundra turning into swampland, there isn’t really all that much room. Good luck cramming a few billion people above 55 or 60 degrees latitude.
The tree line is moving pole-wards thanks to global warming; the gain is less than what’s lost by the desert line moving pole-wards, but it’s something.
Realistically, you need less than 1m² of terrain per person if you stack them in high enough buildings. Look at how China is doing it.
I’m glad I’m old enough to not have to consider living at the population density you suggest. I find the population density of Saskatchewan to be quite enough. I lived in a small city (Saskatoon) for 40 years and the last 10 were flat out miserable. The first 30 were tolerable only because we escaped to nature every weekend.