During the early 1970s, the air in many American cities was … brown. Pollution muddied clear skies and sickened people across the country. The Clean Air Act helped change that. But the law's ...

On May 16, 2025, the U.S. Court of Appeals for the Fifth Circuit issued a significant ruling in a longstanding dispute between the Texas Commission ...

The Clean Air Act (CAA) has been a cornerstone of public health protection in the United States for over half a century. Its stringent regulations on emissions from power plants have resulted in ...

Under the federal Clean Air Act (CAA), California holds a unique position that allows it to request waivers from the U.S. Environmental Protection Agency to enforce stricter vehicle emissions ...