Not saying urban gardens aren't beautiful or enlightening. But people are advocating local food grown in urban gardens for environmental and health reasons. I w

Not saying urban gardens aren't beautiful or enlightening. But people are advocating local food grown in urban gardens for environmental and health reasons. I want to show that this is false, except in a few exceptional cases. Your link is one of them. But realize that hydroponics isn't most people's idea of urban farming. Also, there are drawbacks to the hydroponic approach (energy costs for lighting, manufacture of nutrient solution). That said, there's a lot of potential in hydroponics, especially when you combine it with renewable energy, and I hope it continues to spread.