by the fins of countless fish as they race to the surface. Each basin is home to 2,000 cavorting fish, the managing director of the urban farm explains ... processed into ketchup in the farm’s own kitchen, which is sweetened with home-grown stevia. © ReinadloCoddou Farm shop in the city: Market day is once ... farming,” stresses Heike Mempel, head of the Applied Science Centre (ASC) for Smart Indoor Farming at the Weihenstephan-Triesdorf University of Applied Sciences