COVID and wearing masks outdoors: How culture and evolution shape our behavior
An international research team led by Christoph Randler, Professor of Biology Education at the University of Tübingen, has ...
Daily Mail13 天
Will a gas mask protect me against biological warfare?
A gas mask could, theoretically at least, protect against inhaling anthrax spores, or other possible infective agents used for biological warfare. But it is absolutely VITAL that the mask fits ...