If climate change and population growth progress at their current pace, in roughly 50 years farming as we know it will no longer exist. This means that the majority of people could soon be without enough food or water. But there is a solution that is surprisingly within reach: Move most farming into cities, and grow crops in tall, specially constructed buildings. It’s called vertical farming.
"Imagine a farm right in the middle of a major city. Food production would take advantage of hydroponic and aeroponic technologies. Both methods are soil-free. Hydroponics allows us to grow plants in a water-and-nutrient solution, while aeroponics grows them in a nutrient-laden mist. These methods use far less water than conventional cultivation techniques, in some cases as much as 90 percent less.
Now apply the vertical farm concept to countries that are water-challenged — the Middle East readily comes to mind — and suddenly things look less hopeless. For this reason the world’s very first vertical farm may be established there, although the idea has garnered considerable interest from architects and governments all over the world.
Vertical farms are now feasible, in large part because of a robust global greenhouse initiative that has enjoyed considerable commercial success over the last 10 years. (Disclosure: I’ve started a business to build vertical farms.) There is a rising consumer demand for locally grown vegetables and fruits, as well as intense urban-farming activity in cities throughout the United States. Vertical farms would not only revolutionize and improve urban life but also revitalize land that was damaged by traditional farming. For every indoor acre farmed, some 10 to 20 outdoor acres of farmland could be allowed to return to their original ecological state (mostly hardwood forest). Abandoned farms do this free of charge, with no human help required.Read the full NYTimes Op-Ed here.