A discussion of the Clean Air Act (CAA), its amendments, and significant caselaw pertaining to clean air regulation in the US. The second Trump administration is taking steps to roll back various ...

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 future is ...

Among the many obstacles to enacting federal limits on climate pollution, none has been more daunting than the Supreme Court. That is where the Obama administration’s efforts to regulate power plant ...

In the 1960s, the urban air pollution crisis in America had reached a fever pitch: Cities were shrouded in smog, union steelworkers were demanding protections for their health, and the Department of ...

When Congress passed the Clean Air Act in 1970, climate change wasn’t on anyone’s mind. Yet under an Obama-era decision known as the “Endangerment Finding,” the Environmental Protection Agency has ...

The sky turns a rusty orange. The sun dims behind a thick veil of smoke. For millions of Americans, even ones far from wildfire-prone lands, this eerie scene is no longer rare. Extreme wildfires have ...

David Good, program manager for air monitoring for the Allegheny County Health Department, says the department relies on lab-grade instruments to measure air quality. “We have to have very highly ...

March 27 (UPI) --The Environmental Protection Agency is allowing entities subject to the Clean Air Act to seek exemptions via email through Monday while the agency reconsiders relevant rules.