The Origin of Glass Do you know what I used to be? Go on, take a guess. Maybe you think I was always a shiny window, a sparkling glass bottle or a colourful marble. Wow, those are good guesses... ...but they're all wrong. Long before I became any of those things, I was something much simpler. I used to be sand. My name is Glass, and this is my story. For thousands of years, I lay quietly on beaches, deserts and riverbanks as tiny grains of sand. There were millions of us, eac
