Vertical farms can be created in the middle of a city, creating access to fresh produce, improving the air quality and reducing fossil fuel use.
The population continues to grow and according to the UN by 2050, 80% of people will be living in cities. Unless people come up with some better strategies, there is not going to be enough land to grow food on.
One of the solutions being proposed to address the growing population is vertical farming. Some of the many benefits to vertical farming:
Hothouses have been around for a long time but this is on a larger scale because it involves growing food in multi-level buildings. These skyscraper farms can be created in the middle of any urban dwelling. They would not only offer a sustainable solution but would be an attractive addition to a city.
Various fruits and vegetables are already being successfully grown indoors. Tomatoes are presently the leading crop and 37% of all tomatoes sold in the U.S. are from greenhouses.
In Leamington Ontario, they grow almost 200 acres of greenhouse tomatoes indoors. Canadian vegetable production continues to grow 20% a year because of greenhouses and both the U.S. and Mexico are expanding.
Some of the systems being considered are:
Hydroponics:
Hydroponics cultivates plant life in a continuous flow of water. There is no soil required and the system is self-contained with little water being lost.
Aquaponics:
Aquaponics combines both fish farming and aquaculture with the fish waste nourishing the plants and the plants providing a water filter for the fish.
Sources: The Vertical Farm Project: Maximally Viable Crop Profile, Jasmine Beria, Bryan Garber, Natalie Neu, Nicholas Sebes, Adrienne Sheetz, Medical Ecology, Dr.Dickson Despommier, April 27, 2006
The Vertical Farm Project website