The Clean Air Act Amendments of 1990

The Clean Air Act Amendments of 1990 are a set of U.S. laws aimed at improving air quality and combating air pollution. They introduced stricter regulations on emissions of harmful pollutants, such as sulfur dioxide and nitrogen oxides, which contribute to acid rain and smog. The amendments also established a system for trading air pollution credits, encouraging companies to reduce emissions more efficiently. Additionally, they expanded protections for the ozone layer and addressed air quality issues related to industrial sources and motor vehicles, ensuring a healthier environment and public health.