[guscost]

> I mean, obviously nuclear war was averted because we ended the cold war (we changed our behavior).

I had a very spirited argument the other day about whether a unipolar world is actually more stable than a multipolar world, or not. The threat of nuclear war is ever-present, even if it is less serious now than it was in the 60s. I’m not sure where you get “obviously” in this claim.

> I believe the hole in the ozone layer was fixed by banning CFCs

The alternative explanation (which I’m sure you will be able to find a “debunking” of somewhere) is that ozone is regenerated very quickly, and the “hole” (it really was never more than a “thin spot”) in the Antarctic has improved because the South Pole is exposed to just a little more solar energy now. CFCs probably do make some difference, but they are very heavy molecules and would not accumulate much in the upper atmosphere:

https://news.mit.edu/2021/cfc-atmosphere-ozone-0518

(Note: That article has some data that could support this theory, but it does not reach the same conclusion. You are nevertheless encouraged to think for yourself.)

[Ygg2]

I believe climate change will see us return to unpolar world.

However it's probably going to be only Russia.

[vanviegen]

It seems to me that the reason the USA may not be a superpower anymore in the near future can hardly be blamed on anything other than stagnated American politics.