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The small, yet affluent city-state of Singapore, on the southern tip of the Malay Peninsula. Occupying an area of just 710 square kilometers, the population already exceeds 5.4 million and is expected to grow even further due to migration from overseas. Only 1% of the country's land is used for agriculture, making Singapore dependent upon imports for 90% of its food . To combat this problem, businessmen have come together with the government to develop new and inventive agricultural techniques. Such innovations include rooftop farms in the city, and indoor greenhouses and vertical farming in more rural areas. In this episode of "Asia Insight", we follow the progress of new agricultural innovations in the urban state of Singapore.