What if the rubbish was refabricated to become real urban spaces or buildings? If it is plausible to adapt current machinery, how much material is available? At first sight, any sanitary landfill may be viewed as an ample supply of building materials. Heavy industrial technologies crush cars or to automatically sort out garbage are readily available. 3-D printing has exhausting capabilities if adjusted to larger scales. — bbc.com
The demand for special metals used in the manufacture of electronics is booming, but a few countries control much of the world's supply. Germany is looking to reduce its reliance on imports by exploiting the metal that is thrown away in trash. Urban mining could become big business.
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