[ImPostingOnHN]

temporal proximity to now, closest to furthest

0. climate change has already entered an irreversible spiral

1. decades from now, the irreversible spiral having deepened and accelerated, civilization as we know it has been destroyed, leaving no authorities to do anything about climate change

2. decades to centuries from now, climate change makes earth mostly uninhabitable

3. hundreds or thousands of years in the future, if they weren't all dead, humans perhaps would have been able to maintain a self-sustaining colony of all for humanity another planet

there's not a realistic path for humanity to survive an earth-destroying asteroid, and there never will be