Valles Marineris in imagery captured the Mars Reconnaissance Orbiter. Global topography: NASA/GSFC CTX global mosaic: NASA/MSSS/Caltech/ CTX topography: NASA/MSSS/USGS HiRISE: NASA/U.Arizona/USGS/Amaz ...

This felt like redemption week in Arizona high school basketball with teams avenging losses and making statements.

Two Grand Canyon-size features on the far side of the moon were likely formed in about 10 minutes after an unknown object ...

From Fairmont Scottsdale Princess to Castle Hot Springs, these luxury Arizona hotels and resorts just got a lot of love from ...

The Biden team, urged by Arizona Governor Katie Hobbs, argued that the area in the Grand Canyon region contained historic landmarks, sacred sites and items of high scientific significance ...

The Pinnacle Pioneers Hockey Club will face the Mountain Ridge Mountain Lions Saturday at 6 p.m., in the Arizona High School Hockey Association’s Division I state final at Mullett Arena in Tempe.

Coach Doug Meyer ended up dressing eight players for the game with everybody getting quality ... high school sports since the 1980s for The Arizona Republic. He also covers Grand Canyon University ...

One Valley city is ranked No. 1 in the country among 149 cities as the best place for a family to live. Eight other Arizona ...

With the regular season winding down, there were big Arizona high school boys basketball ... and knocked down nine 3-pointers in a 96-61 win at Grand Canyon. He is averaging 25 points, 10 rebounds ...

So he wants Arizona to sue any person from any other state or country whose emissions damage the air quality here.

Expect sunny skies. The high will be 37°. Good air quality (0-50) Primary pollutant O₃ 90 μg/m³ Pressure is the weight of the air in the atmosphere. It is normalized to the standard ...