Hydroponics — growing plants in nutrient-rich water rather than soil — might seem like a fairly modern idea, but people in China have used the technique to grow rice since at least the 13th century.

Hydroponics is growing plants in a system setup containing water and the proper nutrients. There is no need for soil. There are two main types of hydroponic systems, passive system, uses no energy and ...

BackgroundWater scarcity, declining water quality, and increasing climate variability are imposing unprecedented constraints on global food production, ...