1972 - Scientists discovered rain deposited in the White Mountains in New Hampshire was acidic. 1980 - Congress passed the Acid Deposition Act establishing an 18-year assessment and research program ...

Credit: Gregory B. Lawrence A series of U.S. and Canadian regulations since the 1990s dramatically cut rates of acidic deposition, leading to steep declines in sulfuric acid in lakes.

Douglas R. Lawson, Jerome G. Wendt, Acid Deposition in California, SAE Transactions, Vol. 91, Section 4: 821158–821559 (1982), pp. 3949-3967 ...

Sep 10, 2020 — The success of the Clean Air Act in reducing acid deposition in Adirondack lakes is an under-reported good news story. Many lakes once devoid of life can now support healthy fish ...