I know radar. Those rotating dishes at Schiphol used for tracking airplanes, or at Rotterdam Harbour ensuring safe passage to hundreds of ships a day. I think my next car may even have some radar installed to help me drive safely. But wait, there is more – medical more. ‘Radar is an ideal technology for distinguishing objects and their movements, without touching them,’ says Francesco Fioranelli. ‘It can also be put to very good medical use, such as tracking your health in your home environment, raising the alarm before you are so unwell that you need highly specialised and expensive care.’ Now that’s an unexpected use. Read more about how radar can track both a fighter jet and your grandma’s health.