InsiderJohn Edel bought The Plant as a decrepit meatpacking facility and turned it into a sustainability haven.Morgan McFall-Johnsen At The Plant in Chicago, small businesses are tinkering with sustainable food production. This former meatpacking plant hosts a brewery, a coffee roaster, farms, laboratories, and more. By sharing their waste heat, wastewater, byproducts, and extras, they're attempting a "closed loop." This article is part of "Gains in Green Tech," a series showcasing some of the most transformative solutions to the climate crisis.