Medical scientists worldwide are continuing to do amazing things, and none more so than Professor Tony Weiss. In his laboratory at Sydney University he is making exact 3D replicas of human skin. While Professor Fiona Wood in Perth pioneered spray-on skin for external burns, Tony Weiss’s elasticised synthetic skin, tropoelastin, repairs internal organs—from a baby’s damaged heart to an adult’s arteries, liver or diseased lungs. For open wounds and ulcers, where treatments had changed little since Florence Nightingale’s day, healing time is halved and risk of infection greatly reduced. Professor Weiss holds a most prestigious position: the Sir Samuel McCaughey…