Acid Rain

• Rainwater is naturally acidic. The naturally occurring sulfuric acid in rainwater comes from its reaction with volcanic gases. Rainfall in some areas of the world is now excessively acidic. According to Washington State University in St. Louis, in some parts of the U.S. rainwater is 1,000 times more acidic than normal. Acid rain is the result of atmospheric pollution. Sulfuric acid in rainwater forms when water reacts with the sulfur dioxide produced in the burning of sulfur-containing fossil fuels.