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 ...

For the first time since their species was reintroduced in Colorado, a gray wolf has been tracked into Pueblo County.

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.

Arizona and New Mexico wildlife agencies recently reported that the population of endangered Mexican gray wolves grew by 33 wolves last year.

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

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 ...

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

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 ...

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 ...