An old steel factory can become the world’s largest indoor vertical farm producing healthy food all year round. That shows that the opportunities to increase food production in a sustainable way are virtually endless. AeroFarms’ new 69,000 sq ft (6,410 sq m) facility in Newark, New Jersey will use an “aeroponics” approach. Similar to hydroponics, aeroponics employs a cloth medium for seeding, germinating and growing crops and LED lighting for photosynthesis. The difference between the two growing systems is that hydroponics uses a liquid solution to deliver hydration and nutrients to crop roots and aeroponics uses mist.