PODCAST: Bring oysters back into NYC’s waters

New York City used to be the Big Oyster before it was the Big Apple. But pollution and overharvesting drove oysters to extinction in this area. Now high school students and community volunteers are bringing these bivalves back into the city's waters. They believe that by helping oysters they can also help New Yorkers to develop a closer relationship with nature. Scienceline's Cici Zhang reports.