Wall Street Journal - Urban farming isn’t easy. It can require significant investment, and there are bureaucratic hurdles to overcome. Many companies have yet to turn a profit, experts say. A few companies have already failed, and urban-farming experts say many more will be weeded out in the coming years. But commercial vertical farms are well beyond experimental. Companies such as AeroFarms, owned by Dream Holdings Inc., and Urban Produce LLC have designed and operate commercial vertical farms that aim to deliver supplies of greens on a mass scale more cheaply and reliably to cities, by growing food locally indoors year round.To read the article in its entirety, please click here.