Karl Taylor, 26, teaches flame-working at Sonoran Glass Art Academy and uses a torch to teach others how to produce pendants, jewellery, marbles, perfume vessels and goblets from glass. He's proud of his more original work, such as the hollow "geos" sitting in the glass case. Hollow geos, as Taylor calls them, look like geodes - those hollow rocks with sparkling crystals tucked inside. Taylor transforms glass tubes into coloured bubbles and then works for hours to shape small chunks of meteorite glass into crystal-sized pieces that he builds up into the hollow bubbles to form his hollow geos Read more