Two architecture school graduates in Rotterdam are building a house with an innovative material—bricks made from local trash. WasteBasedBricks, produced by a startup called StoneCycling, creates the bricks by mixing waste from nearby glass, ceramics, and insulation factories, and sometimes rejected clay from traditional brick factories and demolition waste, explains Fast Company writer Adele Peters.

The process of creating the bricks also uses less energy than traditional brick manufacturing, and is less harmful for the environment because it doesn't require the excavation of new clay.

"We like to use only secondary materials," says Ward Massa, co-owner of StoneCycling. "That way it doesn't end up somewhere in the landfill or being sent to other countries—we reuse it as new raw materials."

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