Aside from fighting smog and producing oxygen, the foliage is expected to provide insulation to the residential units.
This new idea can have far reaching implications for city dwelling as we know it. As we noted in our previous article on urban homesteading, the densely populated urban areas of the world are in dire need of increased food democracy. Currently there is a crisis stemming from the fact that our food supply is overly centralized and ripe for abuse, making the case for distributed food systems all the more important. Food forests similar to the one pictured above can(and should be) set to grow not only oxygen producing plants, but organic fruit, vegetables, and fish as well if they are set up using aquaponics or vertical growing techniques.
Source: Raw For Beauty