Verical Farming - The Right Choice

It took humans 10,000 years to learn how to grow most of the crops we now take for granted. Along the way, we despoiled most of the land we worked, often turning verdant, natural ecozones into semi-arid deserts. Over 60% of the human population now lives vertically in cities.
The time has arrived for us to learn how to grow our food that way, too. If we do not, then in just another 50 years, 3 billion people will surely go hungry, and the world will be a very unpleasant place in which to live.

This well-developed project from Columbia University walks through the realities, possibilities and constraints of multi-storey, urban, high-rise farming:

Link : An Essay on Vertical Farming