The bigger cities grow, the more insular they become. This truism is ever so apparent in the recent rekindling of debate about the production of genetically modified foods and crops. Urban communities are becoming so disconnected with how food is actually produced that conventional farming faces growing problems of public perception and trust. This is not helped by the constant, ideologically driven doubt-mongering about GM technology by professional activists, such as Greenpeace, which undermines public confidence in the science that underpins our modern, efficient and sustainable food production system.