Or acid rain? Or Y2K? Or bird flu? Or swine flu? etc etc
Y2K was real. You can thank programmers like me for years of retroprogramming to prevent it.
Don’t forget alar.
Y2K was definitely a big issue.
Acid rain (more correctly acid precipitation) also is an issue of concern. However, the media love drama, and the enviros take advantage of that, so something like acid precipitation becomes high drama.
If you want an interesting and impartial discussion of acid precipitation (and other causes of building deterioration) I suggest you read this-
click on Contents then each page on the bottom click next.