With bipartisan leadership and cooperation between the U.S. and Canada, acid levels slowly reduced, and recent samples ...

In the 1970s, acid rain was one of the most serious environmental threats in North America and Europe. The air was so laden with pollution from coal power plants and cars at the time that it turned ...

When smog floated above America’s big cities, it caused acid rain. It is sulfuric or nitric acid that falls to the ground ...

Nitrogen oxides are produced by burning fossil fuels and contribute to ozone formation, acid rain, nutrient pollution and poor visibility. Acid rain harms plants and wildlife by altering the pH levels ...