Vertical farming: Does it really stack up?
WHEN you run out of land in a crowded city, the solution is obvious: build upwards. This simple trick makes it possible to pack huge numbers of homes and offices into a limited space such as Hong Kong, Manhattan or the City of London. Mankind now faces a similar problem on a global scale. The world's population is expected to increase to 9.1 billion by 2050, according to the UN. Such is the thinking behind vertical farming. Better still, says Dr Despommier, the use of pesticides, herbicides and fungicides can be kept to a bare minimum by growing plants indoors in a controlled environment. A wide variety of designs for vertical farms have been created by architectural firms. “Without artificial lighting the result will be an uneven crop, as plants closest to the windows are exposed to more sunlight and grow more quickly.” The necessary technology already exists. He and his colleagues have created the South Pole Food Growth Chamber, which has been in operation since 2004.
Related: des fermes verticales
• Technolized Agriculture
• Vertical farms