Edit: We survived an ice age and we’re very highly adaptable. Plus, we will hold on to some percentage of technical knowledge that will help us adapt faster.
Edit: We survived an ice age and we’re very highly adaptable. Plus, we will hold on to some percentage of technical knowledge that will help us adapt faster.
It depends on which kind of climate disaster we’re facing. If it’s reversible over the next million years, humanity as a species should be fine. The population would be cut down to just a tiny fraction, and the survivors might have to start from pre-industrial tech level.
If it’s irreversible, and the Earth becomes a Venus like hellscape, the whole planet should be pretty much sterilized. Good luck surviving that.