They always have to have something to frighten the little children (for a “good cause” of course).
Before my time it was the Russians are coming and duck and cover.
When I was a kid it was global cooling and the next ice age with glaciers coming to crush us all.
A little later it was nuclear bombs going to wipe us all out and cause a nuclear winter.
Then it was global warming and, when it stopped warming, that turned into climate change (and change is scary).
Really, I think this climate change is getting a little long in the tooth now. Maybe next we can have a space alien invasion.
You forgot ‘acid rain’ and the ‘ozone hole’.