Based out of El Paso, Texas, a company called Valcent has been working on a vertical farming system called VertiCrop that they believe is even better and more cost-effective than traditional field agriculture because the system has produced "20 times the normal production volume and only requires 5% of the average water used in conventional growing conditions." All the trays kind of remind of lunch period back in school.

Here's how the VertiCrop high density vertical farming system works:

"The VertiCrop system grows plants in a suspended tray system moving on an overhead conveyor system. The system is designed to provide maximum sunlight and precisely correct nutrients to each plant. Ultraviolet light and filter systems exclude the need for herbicides and pesticides. Sophisticated control systems gain optimum growth performance through the correct misting of nutrients, the accurate balancing of PH and the delivery of the correct amount of heat, light and water."

images via valcent