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 ...