China is taking the lead, building what has been described as the world’s largest eco-city.

Adam Shaw visits Tianjin Eco-City - under development in north east China - to see how it plans to balance urban expansion and the the impact on natural resources and the environment.

In other episodes of this series, Saima Mohsin meets a property developer in India, who has his sights firmly in the future of sustainable housing development, and Adam meets the man who coined the phrase “eco-city” – to find out what exactly it means.

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