"It would take well above normal snowfall ... which isn't looking likely." Officials warn of potential risks amid ...

Clyde Tombaugh discovered Pluto in 1930 at Lowell Observatory in Flagstaff. Here's how Pluto won - and lost - its planetary status.

The annual event celebrates the discovery of the little planet with a big heart and other scientific advances at Flagstaff, ...

Arizona is no stranger to weird and wild things. These nine landmarks were recently named the strangest in the state by World Atlas. Here's why.

On today’s date 95 years ago, everyone’s favorite not-quite-a-planet, Pluto, was discovered by astronomer Clyde W. Tombaugh ...

Feb. 18 marks the 95th anniversary of the discovery of our outermost planet-not-planet. Here's what to know about the short ...

Hundreds of protestors took to the streets outside city hall today in Flagstaff after thousands of federal workers with the U.S. Forest Service and National Park Service were fired.

More than 500 people demonstrated on the Flagstaff city hall lawn Monday, in opposition to the Trump administration’s layoffs of thousands of federal workers.

Scientists have long suspected that Mexican long-nosed bats migrate through southeastern Arizona, but without capturing and measuring the night-flying creatures, proof has been ...

NAAR's Market Review places the median sales price of a residential home in Flagstaff as $725,000 this January.

A semi-truck ran off an overpass on I-40 Feb. 1, highlighting concerns about commercial trucking safety in Arizona.