This “pinkhouse” at Caliber Biotherapeutics in Texas, grows 2.2 million plants under the glow of blue and red LEDs. The practice of vertical farming could potentially undergo a transformation that will make urban food centres more productive. Although many people believe vertical farming is unpractical, it is becoming increasingly popular as agricultural space becomes scarcer and people desire food produced closer to home. One major problem that arises with vertical farming practice is that of lighting. By stacking plants on top of each other, it creates sha...