Compared to glassmaking though. At least trees are renewable. We can grow more. We do this now with wood, and it isn't always necessary to cut down virgin fores

Compared to glassmaking though. At least trees are renewable. We can grow more. We do this now with wood, and it isn't always necessary to cut down virgin forests to get more. Responsible countries have laws about planting more for each tree you cut, and responsible suppliers check up to make sure they get their materials from upstanding companies. Glass is made from sand - and we have a finite supply. It is definitely not a renewable resource. This isn't getting into the additives and stuff, just the base material (easier to compare).