When superstorm Sandy hit the Eastern seaboard last week, it thrust a conversation about how to prevent storm surges from devastating seaside cities in the future into the spotlight. In an op-edfor the New York Times, writer Paul Greenberg, argued that oysters could be the shoreline's saving grace. 

Paul Greenberg speaks with Boston Public Radio about how oyster beds once acted as natural barriers that protected the shoreline, and how today, despite hundreds of years of pollution and erosion, we can build up oyster beds again.