Vertical Farming

Food production is one of the main reasons for deforestation. Since we need space for agriculture and a healthy climate why don’t we combine both?
Dr. Dickson Despommier of Columbia University has developed a concept that would save trees and energy. Vertical farms, multiple-story greenhouses, produce food right within in the city and cut energy usage; a green roof saves energy in winter because you don’t have heat escaping from the building, and also in summer because it traps cool air inside.