US Geological Survey
U.s. Geological Survey Home Page: Acid Rain
Learn about acid rain and the devasting effects it has on the U.S., particularly on our nation's capital and monuments.
Other
Environment Canada: What Is Acid Rain?
A thorough explanation of acid rain with a focus on the following topics: what is acid rain, the pH scale measures acidity, what does acid rain do, and what can I do about acid rain.