Here today, gone tomorrow—the motto of the $50 billion industry of pop-up shops. Companies such as Coca-Cola, Prada and Audi have utilized this unique market to not only build brand awareness...

Ancient skulls, a 100-ounce gold crystal, vibrant rubies, and a couple thousand unique minerals are enticing 55,000 people from across the globe to travel to the city of Tucson. It’s that time...