air pollution

Trump EPA Erects New Barriers To Crucial Science

Studies based on private health data are crucial to understanding dangers posed by pollution. A new rule makes it harder for the EPA to consider many studies when setting safeguards.

Climate Change Undercuts Air Pollution Improvements

More Americans are breathing unhealthy air, even though overall air pollution has decreased in recent decades. In the tug-of-war between air regulations and climate change, global warming is winning.