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The Times of India
The Times of India
World
TOI World Desk

In 1990, Congress created a cap-and-trade programme to cut acid-rain pollution from power plants; over decades, SO₂ emissions fell by more than 95%

Acid rain was one of the most significant environmental issues in the United States in the late twentieth century. Sulphur dioxide (SO₂) and nitrogen oxides (NOₓ) from fossil-fuel power plants travelled through the atmosphere and later fell as acid rain. This not only posed problems for the environment but also caused air pollution. As a means of addressing this issue, the Acid Rain Program was established under the Clean Air Act Amendments of 1990.

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