Governments now requre energy producers that can clean smoke stacks by uaong scrubbers that trap pollutants before they are releshed into the air.
Catalytic converters in cars to reduce emissions
(Http://geography.about.com/od/globalproblemsandissues/a/acidrain.htm)

Use coal with less sulfer content
Walk more instead of driving your car
Reduce use of fossil fuels
(library.thinkquest.org/26026/Enviroment_Problems/acid_rain_-_solutions.html)