Air filters in classrooms reduce sick days by more than 10 per cent
Air filters could be a simple way of boosting school attendance Arne Dedert/dpa/Alamy Live News School attendance increased by 1.3 days per pupil per year when five elementary schools in Milan, Italy, introduced air filters into classrooms, in the first randomised controlled trial of its kind. “It’s the first experimental evidence,” says Stefania Renna at … Read more