Humans have been finding ways to make use of glass for thousands of years, even before we knew how to make it. Glassmaking dates back at least 4,000 years and obsidian, a naturally occurring glass, has been used to make arrowheads and blades since the Stone Age. Over time glass became an artistic medium not unlike marble or ceramics, with applications that range from practical to artistic. At the Imagine Museum in St. Pete, Florida, you can see just how diverse glass art has become today. Opened in 2018, the…