Hundreds of vendors from dozens of countries converged in Tucson, Arizona, for the annual Gem and Mineral Show, where the ...

The exhibit is open during regular gallery hours: Monday to Friday, 11 a.m. to 5 p.m., and Saturday from noon to 4 p.m. Visit ...

The U.S. military has tested for the first time a laser weapon as fast as the speed of light, capable of melting missiles, ...