We are always told to recycle glass, but why? Glass never loses quality, no matter how many times it is recycled. Therefore it could probably be used indefinitely, and we'd never have to make new glass. Glass takes a lot of energy to make initially because it has to be heated to extreme temperatures (turning sand into glass is hard work!). When glass is recycled it does not need to be heated to the same extreme temperatures: it only needs to be melted. Therefore it takes less energy to recycle glass than it does to make new glass.
Of course glass is also great because it is durable and can be reused much better than plastic or metal. Many dairies reuse their glass milk bottles constantly without needing to recycle them.
So there you have it! That is why glass is great. Make sure you reuse/recycle it!
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