Since the Covid-19 outbreak began, the single-use, medical-grade N95 masks have become a rare find. And people have been urged to save them for the frontliners. Now, a university in Abu Dhabi has found a way to make N95 masks reusable and eco-friendly. The New York University-Abu Dhabi (NYUAD), in an innovative project, has 3D-printed an N95 mask that is comfortable and can be re-sterilised after use - while maintaining ...