President Trump's EPA administrator aims to roll back environmental protections in an effort to reduce the agency's spending.

Fires and agricultural soils can rival cars and factories in emitting chemicals that lead to ozone, making it hard to meet air quality standards.

The WHO has identified air pollution as the biggest environmental threat to human health globally. Each year, an estimated ...

The Valley has seen decades of big business deals and population growth. A yearslong fight over air pollution could now ...

A recent University of Utah study found that the U.S. Environmental Protection Agency is not adequately measuring air ...

Spring equinox brings hottest day of the year – maps, pictures and reaction - The sharp rise in temperatures coincides with ...

Air pollution remains the city’s most pressing concern. It is perhaps the one issue that affects every city resident – rich or poor, old or young.