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|With a population of five million crammed on a landmass of just 715 square kilometres, the tiny republic of Singapore has been forced to expand upwards, building high-rise residential complexes to house the country's many inhabitants.
Now, Singapore is applying the vertical model to urban agriculture, experimenting with rooftop gardens and vertical farms in order to feed its many residents.
Currently only seven percent of Singapore's food is grown locally. The country imports most of its fresh vegetables and fruits daily from neighbouring countries such as Malaysia, Thailand and the Philippines, as well as from more distant trading partners like Australia, New Zealand, Israel and Chile. An influx of immigrants has resulted in a rapid crowding of Singapore's skyline, as more and more towering apartment buildings shoot up. And meanwhile, what little land was available...