Right. You can at least breathe in Antarctica.
And terraforming Mars would be several orders of magnitude more expensive than even a massive readjustment of Earth's climate.
And terraforming Mars would be several orders of magnitude more expensive than even a massive readjustment of Earth's climate.
I'm imagining a turn-key colony that initially accommodates 1,000 people and can expand arbitrarily, that is robotically prepared, then the humans arrive to a heated, lighted, oxygenated, self-sufficient habitat. Once this has been standardized, it's a matter of dropping these in various spots around the planet, not too far apart, humanity can then colonize the planet in 1,000 person increments.
It's not a solution for our climate problems back on Earth, obviously, but it's a way to ensure some redundancy, should the Earth become uninhabitable through climate catastrophe or war. Or an asteroid strike.