FLAGSTAFF, Ariz. (AP) — A resident of northern Arizona has died from pneumonic plague, health officials said Friday. Plague ...

A University of Arizona researcher is part of an effort to identify the diseases carried by ticks, and she's asking people to send her samples.

The plans for strips of land in Texas and Arizona are the latest step to militarize the boundary to stem an already dwindling ...

More than half of Utah is now in severe drought, but it is far from the only Western state experiencing dry conditions. Utah ...

More than half of Utah is now in severe drought, but it is far from the only Western state experiencing dry conditions. Utah ...

The United States has promised to be vigilant — and after detecting this new NWS case, we are pausing the planned port ...

Environmental advocates warn that border wall construction on the rugged mountain could cause erosion and sever wildlife ...

While a drier and hotter landscape puts many wildlife at risk, roadrunners can take advantage of a warming world thanks to ...

Over much of southern Arizona and in the Grand Canyon ... east and an area of low pressure parks to the west of Arizona. That combo will allow for a sufficient funnel-effect of moisture from Mexico.

Heat-related alerts were in place for parts of Texas, New Mexico, Arizona, Nevada, Oregon, and California on Friday.

Summer just started in earnest, but if you tour the lift lines of the internet, you can already hear the familiar preseason ...

July 10, 2025 - A widespread late-June heatwave impacted much of the central and eastern U.S., and brought record-setting ...