U.S. Agriculture Secretary Brooke Rollins closed the border to Mexican cattle for a second time after new reports of screwworm infestations.

The 80th anniversary of the Trinity Test arrives in New Mexico at a poignant moment in New Mexico’s nuclear legacy.

The first military zone, set up along a 170-mile stretch of border in New Mexico in April, came days after an executive order ...

Arizona Attorney General Kris Mayes has sounded the alarm over a growing threat at the southern border — drones being used by ...

More Americans are now eligible for compensation for health problems linked to radiation exposure from the atomic weapons ...

A meteorite that struck near Winslow, Arizona, about 56,000 years ago may have triggered a massive landslide in the Grand ...

A new study has revealed the formation of the Grand Canyon may be tied to the creation of another Arizona landmark.

5. Iowa: Yes, Iowa! The Hawkeyes will be led by quarterback Mark Gronowski, the former FCS player of the year, two-time national champion and 42-5 starter at South Dakota State. He’s Iowa fans’ reward ...

Raúl Grijalva, who is Adelita’s father, was one of the most senior and progressive power brokers on Capitol Hill.

Republican nominees competed in Arizona's special primary election for the 7th congressional district seat previously held by the late Democrat Rep. Raúl Grijalva.

A Pakistani national indicted in an alleged human smuggling ring appeared in a federal courthouse in Tucson on Tuesday.

Voters in Southern Arizona have casted ballots to select nominees to succeed one of the most senior and progressive power ...