Clouds start to build in the early afternoon and the air becomes sweet with the promise of rain. The monsoon season is ...

Smoke, dust, what else is heading toward U.S.? As dust cloud over the Sahara Desert sweeps to the U.S., here's what a haboob is.

TUCSON, Ariz.— The Center for Biological Diversity petitioned the U.S. Fish and Wildlife Service today to protect Bendire’s thrasher under the Endangered Species Act.. The imperiled songbirds, native ...

The northern lights — also called aurora borealis — could be visible in Alaska, Washington, Montana, North Dakota, Minnesota, Michigan, Maine, northern parts of Idaho, Wyoming, Iowa, New York ...

U.S. hits notorious Mexican drug cartel LNFM with sanctions, indictments By Darryl Coote 1 of 2 | Federal authorities have charged Johnny Hurtado Olascoaga, an alleged leader of the La Nueva ...

Ousted FDA vaccine chief Dr. Peter Marks talks about the current administration's policy on vaccines and how that is impacting its response to the ongoing measles outbreak in the southwestern U.S.

President Trump says he'd like to attack Mexican drug cartels. A unilateral action by the U.S. would be a huge challenge for Mexican President Claudia Sheinbaum, who says her country will "never ...

U.S. Agriculture Secretary Brooke Rollins on Sunday said she is suspending imports of live cattle, horses and bison through the southern U.S. border over the damaging pest New World screwworm, a ...

A powerful geomagnetic storm in the forecast for Sunday night could make the colorful northern lights visible across parts of the U.S., according to the National Oceanic and Atmospheric ...

But the Mexican president’s latest comments confirm that Mexico remains under intense pressure from Washington to accept greater U.S. involvement in the anti-drug fight, noted Gustavo A. Flores ...

U.S. Northern Command has increased manned surveillance flights along the U.S.-Mexico border to monitor drug cartels and the movement of fentanyl and is increasing its intelligence sharing with ...