Check out photos inside and outside two large luxury homes in Lake Havasu City, an area that could be the next Arizona hot ...

The 624,000-acre Chuckwalla National Monument is located just south of Joshua Tree National Park, where the Mojave and ...

On the U.S.-Mexico border, the International Boundary and Water Commission has the unglamorous job of stopping sewage flows ...

Environmentalists’ efforts to force quick state action to regulate groundwater pumping along the imperiled San Pedro River were quashed by a court this week.

While tribal, federal, state, officials expected to attend event are lauding move, President-elect Trump threatens to reverse ...

The president is set to declare two new national monuments in California, in the desert near Joshua Tree and amid forests and ...

President Joe Biden is signing a proclamation to establish two new national monuments in California in part to honor two ...

While tribal, federal, state, officials expected to attend event are lauding move, Trump threatens to reverse course.

For the third time in recent years, including once last month, a San Diego delegation has paid a visit to the White House to urge President Joe Biden to declare a state of emergency for the Tijuana ...

SAN DIEGO — California state officials have deployed a new trash collection system in the Tijuana River Valley to combat cross-border pollution. The system includes a 450-foot-long boom designed ...

Multiple atmospheric rivers taking aim at the Pacific Northwest could unleash a deluge across several states through Christmas Eve, AccuWeather reported. Millions of Americans will travel for the ...

As Trump returns to the White House, The Arizona Republic/azcentral.com will document all aspects of how his immigration and border policies ... USA TODAY Network in California, New Mexico and ...