A new road in Pennsylvania has been constructed using materials repurposed from 15 other roadways, in a "road transplant" that helps cut costs and reduce the project's environmental footprint. The recycled materials are gathered during other construction projects, then milled and mixed with oil and tar. "Departments of transportation are saving money, and it's definitely a good thing environmentally," says one highway-construction expert. "The beauty is, you can continually recycle."

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