In the midst of a dry winter, images of the California wildfires struck fear in the hearts of Arizonans. Some cities are more prepared than others.

Is your city clean? A new study named an Arizona place one of the cleanest based on air quality, pests, litter and more. Here's what to know.

A new study by Climate Central, a non-governmental organization that conducts data-driven weather reports, finds Phoenix to ...

Cities in California make up a significant proportion of the country's most polluted metropolitan areas when it comes to air ...

The maps allow us to see what the most forested places in the U.S. have in common. Zooming in on a few different examples, the first thing you’ll notice is that tree cover depends heavily on the local ...