When the Chernobyl nuclear disaster happened on April 26, 1986, the region became one of the most heavily contaminated areas on the planet. A 1,000-square-mile area surrounding the doomed nuclear ...

While wolves have become more commonplace in the Rocky Mountains and Pacific Northwest, a young female recently made her presence known an hour north of LA.

Mexican gray wolves continue to be one of the most controversial conservation issues in Arizona and across the region.

Such killings are not new but are typically carried out by wildlife officials.

State and federal wildlife agencies reported 319 Mexican gray wolves in the wild, up from 286 a year ago.

Another wolf in the King Mountain pack has died, Colorado Parks and Wildlife announced Friday.

Arizona wildlife managers say consistent growth in the Mexican gray wolf population could trigger the species' downlisting ...

California will reexamine its gray wolf conservation policies — including tactics North State ranchers use to protect cattle — now that the endangered and protected species' pack numbers are growing ...

For the first time in a century, biologists have documented a gray wolf in Los Angeles County over the weekend, a sign that these predators that were eliminated from the state by hunters are ...

Gray wolves, a species that has long been vilified and admired, will no longer receive federal protections under the Endangered Species Act in the Lower 48 U.S. states, the Trump administration ...

The Trump administration said this week that it would not develop a new recovery plan for gray wolves, a move environmentalists say could be a first step toward removing endangered species protections ...