The next big thing is here, all girders and concrete pads, glass roofing and gravelly dirt. Viraj Puri, co-founder of one of the nation’s largest indoor farm companies, walks through the construction site, and even without the luminous frills of thousands of butter lettuces, it’s easy to see that the building going up where Bethlehem Steel once stood is something ambitious in the world of food. The Sparrows Point steelworks in Baltimore, once the largest steel-producing facility in the world, was shuttered in 2012, leaving no trace of what once supported 30,000 families with Bethlehem Steel wages. Now the vacated land is dominated by a FedEx distribution center, an Amazon fulfillment center, an Under Armour warehouse. And by the beginning of December, Puri’s Gotham Greens farm will join them, part of a global craze for decentralized indoor food production. Food and agriculture innovation have sucked up remarkable […]