Plot: The team look at some of the things threatening the safety of your family on a daily basis. Liz finds out why old and very young pedestrians may never be safe crossing the road; on the anniversary of Fabrice Muamba's miraculous survival following a heart attack playing for Bolton Wanderers, Maggie asks how many young people could be carrying a similar time-bomb, and how science can help them; Maggie also investigates a revolutionary new burns dressing that could drastically reduce the risk of scarring; and Jem turns crash-test dummy as he asks why European legislation is preparing to make rear-facing seats compulsory for more children