The lawyers who successfully won the law’s climate authority once thought of it as a placeholder for stronger legislation. Three presidents have used the Clean Air Act to curb planet-warming pollution ...

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 ...

Environmental Protection Agency Administrator Lee Zeldin testifies before the House Committee on Energy and Commerce Subcommittee on Environment in the Rayburn House Office Building on May 20, 2025 in ...

The US Environmental Protection Agency has proposed to remove air emission regulations from plastic pyrolysis plants, also known as chemical or advanced recycling facilities, that break down plastic ...

Thomas Jorling, adviser to Republicans who cosponsored the 1970 law, disputes the Trump administration’s claim that it shouldn’t apply to planet-warming greenhouse gases. Thomas Jorling with his dog, ...

The Clean Air Act’s outdated framework is hindering progress. New bills aim to modernize it with reforms aligned to today’s economic, environmental, and scientific realities. The Clean Air Act (CAA) ...

For more than five decades, the Clean Air Act has prevented millions of premature deaths, hospitalizations, and lost work and school days. By one official reckoning in 2011, the act’s limits on ...