Portugal has a divorce rate of 94% and India just 1%, according to a social media post about divorce in 33 countries that has gone viral. But how are these figures calculated and what do they really tell us about the quality and endurance of marriage? We investigate with guests Marina Adshade, assistant professor at the Vancouver School of Economics and Dr Cheng-Tong Lir Wang of the Institute for the Future in San Francisco.

Presenter: Ben CarterProducers: Octavia Woodward and Jon BithreyEditor: Richard VadonProduction Co-ordinator: Brenda BrownSound Engineer: Neil Churchill