In a sweeping new study of more than 13,000 urban areas worldwide, researchers have mapped air pollution levels and carbon dioxide emissions, providing comprehensive global analysis of urban ...

Particle and ozone pollution have been linked to a number of negative health impacts, including mild respiratory conditions ...

More than 50,000 people face unhealthy levels of air pollution across parts of Nevada on Wednesday, according to the U.S. Environmental Protection Agency (EPA).

Those heading to Texas' largest National Park today should know that a warning has been issued and it's one that could impact ...