I loved this article, except for the misleading subtitle: “To survive the next thousand years, humans must save Earth and then venture beyond it”

So we have to first save Earth, and then venture beyond it?

With such a condition, we would not have left Spain for the New World.

Yes, we must save Earth. But Earth society is a tangle of competing interests. There will never be a harmonious whole. One can hope for better policies, and one can advocate for them, but to wait for them is to forego other things that, by themselves, might be amazing.