Scientists estimate that 75% of the world’s population will live in cities by the middle of this century. If we continue using present day technologies, the pollution those cities create will make them unlivable. I wrote and directed the Australian and Asian segments for this six part series, produced by Darlow Smithson, London, for Discovery Science. They combed the worlds of science and technology for green solutions to problems facing cities of the future. On a personal note, my father died during the shooting of one of the Australian episodes and without the support of DOP Brian MacDiarmant and PM, Su Mae Khoo, I wouldn’t have been able to deliver. This segment, about the humble lettuce, was a happier memory.