acid rain

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SO2 and NOx emissions in the U.S.

Spruce trees damaged by acid rain in Karkonosze National Park, Poland.

map of acid deposition

Learn how pollution from industrialization in Europe damaged the limestone of Cologne Cathedral

U.S. emissions of SO2, NOx, and NH3, 1970–85 (five-year intervals) and 1990–2008 (one-year intervals).

precipitation pH in the United States, 1994

precipitation pH in the United States, 2008

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acid rain: Facts & Related Content

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Facts

Also Known As	acid deposition • acid precipitation

Photos and Videos

SO2 and NOx emissions in the U.S.

Spruce trees damaged by acid rain in Karkonosze National Park, Poland.

map of acid deposition

U.S. emissions of SO2, NOx, and NH3, 1970–85 (five-year intervals) and 1990–2008 (one-year intervals).

precipitation pH in the United States, 1994

precipitation pH in the United States, 2008

Graph of hydrogen ion concentration in water collected at Hubbard Brook Experimental Forest between 1960 and 2007.

Learn how pollution from industrialization in Europe damaged the limestone of Cologne Cathedral

Discover how researchers sample clouds for acidity and pollution caused by industrial and automobile emissions

Visit Germany's Black Forest to study the effects of industrial emissions, urban smog, and acid rain

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Topics

What Causes Acid Rain?rain sulfur dioxide nitrogen oxide nitrogen dioxide air pollution particulate matter atmospheric brown cloud smog Do Cows Pollute as Much as Cars?The six criteria air pollutants

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