The state of New Mexico is suing the U.S. Air Force over "forever chemical" pollution from a military base. The suit alleges the Air Force refused to comply with orders to address extremely high ...

On Friday, the Air Quality Index (AQI) was expected to reach the purple category (between 201 and 300), or the very unhealthy ...

NORFOLK, Va. — Acid rain is a serious environmental problem caused by air pollution. It forms when sulfur dioxide and ...