When two recent architecture school graduates in the Dutch city of Rotterdam decided to build their own house on an empty lot, they chose a material that has never been used in a home before: bricks made from local trash.

Called WasteBasedBricks, the bricks are produced by a startup called StoneCycling, which has been perfecting the formula over the last few years. The company mixes waste from nearby glass, ceramics, and insulation factories into their new material, and sometimes also uses rejected clay from traditional brick factories and demolition waste.

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