Researchers have discovered an unusual molecule that is essential to the atmosphere's ability to break down pollutants, especially the compounds that cause acid rain. It's the unusual chemistry ...

Acid rain is a term that refers to not just rain but also other forms of precipitation such as snow, hail, sleet, and fog that has a higher acidity than normal. Acid rain is caused by the burning of ...

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 ...

Depleted ecosystems, dwindling forests, contaminated drinking water and toxic soil. All due to what Canada's Environment Minister John Roberts called in 1980 "the most serious environmental threat to ...

Moscow/Bologna/Halle. The Tunguska catastrophe in 1908 evidently led to high levels of acid rain. This is the conclusion reached by Russian, Italian and German researchers based on the results of ...