Air in the U.S. has gotten cleaner for decades, adding years to people's lives and preventing millions of asthma attacks, but nearly half of Americans still live with unhealthy air pollution, a new ...

The air quality index or AQI levels in Delhi, India and surrounding areas are touching a severe 400 with the air looking dark due to the smoke and pollution. Besides staying indoors and investing in ...

A trio of judges found that EPA erred in eliminating affirmative defenses for some pollution violations at major facilities.

A layer of smog lingers above downtown Los Angeles in 2024. Millions of Americans are still breathing in unhealthy air, despite long-term progress toward cleaning up many sources of pollution, ...