Beneath a public square in Athens lies an engineering marvel that has been dormant for centuries. A part of it passes under a ...

Ancient Roman concrete, which was used to build aqueducts, bridges, and buildings across the empire, has endured for over two ...

NPR's Ayesha Rascoe speaks with Giorgos Sachinis, director of strategy and innovation at Athens Water Supply and Sewage Company, about plans to revive an ancient aqueduct built by the Romans.