It's almost that time of the year. Get ready for the City of Tucson to be busier than usual, as the 2025 Tucson Gem Show is ...

Arizona has numerous famous caves — some readily ... stalagmites and flowstones, as well as fossils that are millions of years old. In addition to the regular tours, the Grand Canyon Caverns ...

At a motel in the middle of Tucson, Arizona, a head and neck surgeon in ... Workers at Zoic, a fossil restoration firm in Trieste, Italy, reassemble an Allosaurus unearthed in Wyoming.