With 7 of its most ambitious rules for cars, trucks and trains repealed, California officials now must find new ways to clean ...

For the world's chief contributors to pollution, AI offers bold new possibilities for spewing corporate propaganda.

What is PM2.5? Hazardous airborne particles and chemicals can come in a variety of forms, and from a variety of sources, even some natural ones. Wind-blown desert and mineral dust, wildfires, ...

Every year, more than 300,000 people die of lung cancer due to PM 2.5, and research suggests these pollution particles not only initiate cancer-causing genetic defects but drive tumor formation.

After months of backlash over alleged pollution concerns, xAI has finally secured an air permit covering some of the methane ...