Oh really! Follow this link to an Accuracy in Media newsletter from 1990. Acid rain may be a measureable thing, but the damage claims are hype.
I agree that there has been an exaggeration on acid rain, But come on now it's not a natural occurrence when 40 Lakes in an area that were thriving end up turning so acidic that not a thing can live in them and many others have also had a drop in pH. And the Adirondack park where these lakes are is about 10X the size of the Smokeys so they are pretty isolated so the damage is not coming from a local pollution source.