I have discovered the following article that inspired me to draw a bigger picture on urban gardening - at least qualitatively. http://www.nationalgeographic.com/environment/urban-expeditions/austin/caleb-harper-innovation-in-urban-agriculture-important-because-of-climate-change/ Of course, I wonna win the FAIRPHONE (https://www.know-why.net/question/CfsXb3NvriEsmSuhnnuxsSQ)