Nothing. It's still wrecking ecosystems daily. Interest in the US fell off sharply in the early 90s, but the people who are directly affected still care very much about it.
Here's a timeline for news articles mentioning acid rain: google.com/archivesearch?q=acid+rain&sco....
I don't or cant remember anything leftists predicting ever coming true....incidentally they also seem to think these crises they create can only be solved by them.
Acid rain comes down when conservatives are in office apparently.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.