Aeroponics is a method of hydroponics developed in Israel. It utilizes sprayers which spray nutrient solution over the roots, aerating the solution. The roots hang from a mesh pot filled with clay balls or lava rocks, or rockwool, anything to grab onto. they hang in to a tube (on the ones I've seen) that is filled with little misters. The roots then get a mist of nutrient solution all the time.
