An auction in New York City featured rare geological artifacts, including the largest piece of Mars sold for $5.3 million and ...

It's another meteoric rise for what's called the largest piece of Mars on Earth. The 54-pound rock fetched nearly $5.3 ...

A Ceratosaurus fossil that is one of only four known to exist has sold for $30.5 million at auction. The rare dinosaur fossil is “one of the finest and most complete examples of its kind ever found,” ...

The Cheyenne Frontier Days kicked off with a lively parade downtown, featuring marching bands and colorful floats under sunny ...

The National Weather Service warns of possible severe storms Saturday afternoon in Cheyenne, bringing gusty winds and hail, ...