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 ...

The Phoenix area's long-standing ozone pollution issues could have serious impacts on local economic competitiveness and ...

The Phoenix metro area is experiencing worsening air quality due to high ozone levels, despite efforts to reduce emissions. Health experts warn that ozone pollution poses significant health risks ...