The EPA's decision on the Valley's ozone nonattainment issue could have big impacts on public health and the local economy.

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

Air pollution is changing, but are we keeping up? Explore its hidden risks, policy challenges, and why exercise still ...

Referring to a little-known provision, it said power plants and others could write to seek exemptions to mercury and other ...

This blog post explores the factors contributing to air pollution and introduces two instruments for continuous ambient air ...

This story was produced in partnership with the Pulitzer Center. It is part three in a four-part series. Read part one here ...

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

Can you imagine a future where the quiet hum of electric vehicles replaces the familiar rumble of gasoline engines? That ...

A legislative proposal in Arizona hopes to lower gas prices amid a recent appeal to Environmental Protection Agency ...

The World Health Organisation (WHO) has warned that air pollution remains one of the most severe global health threats, ...

Last summer, we spent 12 weeks collecting air pollution data from both inexpensive gas sensors and reference instruments at a ...

The EPA also said on Wednesday it would formally reconsider a landmark 2009 finding by the agency that greenhouse gases are a ...