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

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.

The Romans used concrete to build aqueducts, bridges and buildings that have endured for over 2,000 years. The post Why Roman ...