Got ADHD? There's a chance you have dyslexia too

There's long been an assumed link between ADHD and dyslexia, and now a study has looked at the genes of thousands of people to find the overlap.  Radon is a naturally occurring gas that can be found in homes and workplaces. Researchers have looked at a potential link between domestic levels of radon and childhood leukaemia. Can period-tracking apps be trusted to give you information about your fertility? And science fiction is becoming science fact in the field of brain-computer interfaces.