Human population is expected to reach 9 billion by the year of 2050, and about 80 percent people will be living in cities. Over-population will surely damage this planet in many ways, unless we figure out a way to save this planet.
But one thing that every person require to stay alive (other than oxygen and water) is food. To farm food we need land, and we may not want to cause more damage to mother earth by cutting down forests. To provide a decent quality food to 9 billion people is a big challenge. But that problem can be solved with this innovation.
Vertical farming is the practice of producing food in vertically stacked layers, such as in a skyscraper, used warehouse, or shipping container. The modern ideas of vertical farming use indoor farming techniques and controlled-environment agriculture (CEA) technology, where all environmental factors can be controlled. Vertical farming will take less space, and may produce perhaps 1000 times more food on the same amount of land.