So as not to hijack the other global warming thread...

Does anyone recall the outcome of the acid rain issue years ago? Are there any analogies/lessons to be learned ,such as whether there was pro and con regarding whether it was legitimate science issue? Or whether factors other than man-made were the cause of the problem? Or whether, if there was in fact a bona fide problem, the steps taken by man did in fact remediate or at least lessen the problem?
Seems to me there may be analogous/parallel lessons to be learned re the present debate over climate change. (Or did that issue engender the same type of cluster you-know-what as what's going on now?)