I guess some ancient people discovered glass when fire, or perhaps lightning, melted sand into that shiny substance, but it took a long time before they learned to make it into flat sheets for mirrors, windows, and other practical purposes. Stained glass windows are an art form and lots of other beautiful things are made of colored glass.
As a writer I can't resist asking this question: What might happen if all the glass in the world were to suddenly disappear?
What would we do without it?
Windows would become wind holes, and monitors and TVs would have no screens.
Just look around at all the things in our homes, offices, and streets that are made of glass and imagine what the world would be like without them.
Does that give you any ideas for stories? If so, please leave a comment and share them.