The hidden power of the humble oyster

In Quanzhou, oysters are more than food — they’re part of the local history. For centuries, oyster shells have been used to reinforce bridges, build storm-proof homes, and shape coastal life. This episode explores how 11th-century engineers employed oysters in the construction of the Luoyang Bridge, with insights from historians. We also hear from Professor Cai Lizhe of Xiamen University and Lin Jianyi from the Chinese Academy of Sciences on how oyster shells are used today to restore soils, filter water, and even cut carbon. From ancient ingenuity to modern climate action, discover how the humble oyster has sustained people and places.