Neffra Matthews, a retired photogrammetrist for the Bureau of Land Management, was part of a research team in 2014 that first found evidence of dinosaur mating dances at Colorado’s Dinosaur Ridge.

A plan to round up rare curly-haired mustangs from herds in southcentral Wyoming is on hold after a Tuesday federal court ...

In the last 24 hours, the fire jumped Highway 89A, a major corridor connecting the Grand Canyon’s North Rim to communities in southern Utah.