What happend to the Acid Rain??

What the heck ever have happen to acid rain? I mean, when I was a kid, I was as scared of acid rain as I was nuclear annihilation. The cold war was in full effect, and acid rain was all over the tv and news media.

As of late, I haven't heard anything about it in years. So what happened to Acid Rain? Was it part of someone's political platform? Or a scary-sounding label put on a not-so-scary threat to get people to watch more TV/advertisements?