The National Atmospheric Deposition Program (NADP) provides this report (.pdf format) entitled "Nitrogen in the Nation's Rain." The report describes the nitrogen cycle (atmospheric nitrogen pathways), human activities that contribute to nitrogen levels, the role of agriculture (through fertilizers), effects on aquatic systems, and measurements of nitrogen deposition. In addition, the report...

Recently posted by the Environmental Protection Agency (EPA), this report describes progress made under the Acid Rain Program, established by Congress in 1990 under the Clean Air Act. The report, which details the reduction of the primary components of acid rain, "provides both basic information about the nature of acid deposition and detailed descriptions of how key indicators have changed." The...

The results of a long term study of the effects of acidic deposition in the Northeast were published in Bioscience this week, and they suggest that forests, lakes, and streams of the Northeastern US are not recovering from the toxic effects of acid rain despite significant cuts in the power plant emissions of sulfur dioxide and nitrogen oxide -- two major contributors to the problem. "Acid rain,"...

The EPA developed this colorful website to teach students all about acid rain. First, through clear descriptions and helpful figures users can learn the characteristics of acid rain, its dangers, and how to control it. The website offers an interactive connect-the-dots, word searches, crossword puzzles, and other games. A short movie provides an overview of how the use of coal contributes to acid...