Archival storage poses lots of challenges. We want media that is extremely dense and stable for centuries or more, and, ideally, doesnt consume any energy when not being accessed. Lots of ideas have floated around— even DNA has been considered —but one of the simplest is to etch data into glass. Many forms of glass are very physically and chemically stable, and its relatively easy to etch things into it. Theres been a lot of preliminary work demonstrating different aspects of a glass based...
