Collectors of marbles (as in the children’s game) and glass art enthusiasts, take note: The hobby of marble hunting is getting more attention. Glass artist Josh Simpson originated the pastime in 1976 with his “Infinity Project,” inspired by finding some marbles in his yard. He started making miniature glass spheres he called “planets” and hiding them outdoors. In the 1990s, he started The Infinity Project website, building a group of like-minded people leaving “planets” in remote locations. With the rise of social media in the 2010s, people started forming their own marble hunting groups online. Group members receive a photo of a handmade art glass marble and a list of clues to its location. For more information, including links to marble hunting groups, go to http://worldsbiggestmarblehunt.com/.