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 ...

Adelita Grijalva beat back charges of “legacy” and embraced the memory of her father, Raúl Grijalva, to win the Democratic ...

PHOENIX (AP) — Voters in southern Arizona selected Adelita Grijalva in the Democratic primary for the 7th Congressional District election Tuesday to succeed her father, the late U.S. Rep. Raúl ...

The National Park Service is defending its handling of a lightning-sparked wildfire that destroyed the nearly century-old Grand Canyon Lodge and dozens of historic cabins, saying containment lines had ...

Arizona’s top legal official is asking for federal laws to prohibit immigration enforcement agents from wearing facial coverings during raids.