How old is too old when it comes to parenthood? Nicki Chapman meets those who feel having kids later in life keeps them young. Dr Rangan Chattejee continues his Making Sense of Our Senses week with a close-up look into eyesight and finds out how to keep looking good. Bill Turnbull meets Lord Sugar's right-hand man Claude Littner, who thinks it is time businesses hired a whole new generation of workers taking up apprenticeships.