Medicine & TechnologyUpon excavating a 1,600-year-old burial mound, archaeologists discovered a huge iron sword and shield-like bronze mirror that may have been used to ward off evil spirits. Read to know more.
New research has just proven the efficacy of face masks as a protection against COVID-19. However, according to the researchers, the surgical mask is guaranteed effective while the cloth-made falls short.
Scientists have recently studied the use of face masks, as well as the efficacy of those that are made with nanofibers. They found that masks made with the material need further improvement for better efficacy.