the Clean Air Interstate Rule

The Clean Air Interstate Rule (CAIR) is a regulation aimed at reducing air pollution, specifically sulfur dioxide and nitrogen oxides, that cross state borders and contribute to smog and acid rain. It requires power plants in certain states to cut emissions, helping improve air quality across multiple regions. By limiting pollutants at their source, CAIR seeks to protect public health and the environment without imposing unnecessary burden on individual states. It emphasizes regional cooperation to tackle pollution that naturally moves through the atmosphere, ensuring cleaner air for communities downwind from emission sources.