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Can any country really afford to pay all its workers $25 an hour? Switzerland is holding a referendum to set what would be the world's highest minimum wage. Unions say you can't survive there on less. Businesses say it will cripple them. Plus, we meet professor Henrietta Moore, an anthropologlist tasked with the challenge of launching an Institute at the University of London, which aims to find answers to maintaining sustainable global prosperity. And, Hong Kong correspondent, Juliana Liu, describes her encounter with the owner of one of the world's biggest internet firms, Alibaba, ahead of its proposed listing on the US stock exchange.