You may already be eating leafy greens that grow without soil, sunlight or ever being touched by human hands. Vertical farming has gained interest from growers and major investors around the world as a way to provide nourishing food, especially in urban areas. Gail Taylor, a vertical agriculture researcher and chair of the UC Davis Department of Plant Sciences, offered this perspective in an article recently published in The Guardian:
Small growers can build their own farm-scale coolers at a fraction of the cost of conventional units, thanks to the invention of a device that adjusts air conditioners to drop the temperature all the way down to refrigeration levels.
