Tomorrow's World legend Maggie Philbin joins Liz Bonnin and Jem Stansfield for the return of the show that explains how science shapes the world and puts theories to the test through a range of imaginative experiments. Investigations to look forward to throughout the series include whether aeroplanes carry disease, why antibiotics are running out, and how gasses are used to keep food fresh. Plus, there is an item on child safety and a timely report on DNA testing used to identify food that isn't what it claims to be.