Aeroponics is a method of growing food indoors on suspended panels, by hydrating the roots frequently with nutrient rich spray.
It does require electricity. The positives are that it does not depend on growing seasons, arable land or fertilizers, and it uses 65% less water than conventional farming.
Aeroponics entrepreneur Richard Stoner explains how even wheat can be grown this way!
"By increasing the amount of biomass per square foot we can grow in densities that have been unheard of in the last 20 years. In that manner, we can supplement and increase the food supply for cities and metropolises."
Keep aeroponics on the Nextworld radar: it's an efficient way to grow nutrient rich organic produce in a controlled environment.