The unprecedented fire season has already killed 30 people, and burned down thousands of buildings and homes, forcing over 96,000 residents to evacuate.

"The smoke is so dense," one agricultural worker in Oregon told NPR. "I feel dizzy, my throat hurts and my head feels like it's going to explode." Their employers are also faced with tough choices.

Transportation — trucks, trains, planes and automobiles — is a major source of greenhouse gas emissions in the U.S. Electric vehicles offer a less...

A recent study by the American Lung Association shows the air along Georgia's coast and in the mountains is clean and unpolluted. But in the metro...

A recent study by the American Lung Association shows the air along Georgia's coast and in the mountains is clean and unpolluted. But in the metro...