Keep this in mind if you think we don't need to stay at home in order to prevent or reduce the spread of coronavirus (covid 19), or other highly infectious virus or bacteria. via science alert: In theory, by now all of us should understand why washing our hands, wearing masks, and keeping up sound hygiene practices is important during a pandemic. But nothing really drives the point home as effectively as a good old-fashioned demonstration. Japan's public broadcasting network NHK has really brought the goods in a new video that's gone viral. NHK worked with infectious disease experts from St. Marianna University School of Medicine in Kawasaki to set up a buffet-style meal for 10 people. They placed a little fluorescent paint on the hand of one 'infected' person to simulate a cough into their hand, and then let the participants have at the buffet for the next 30 minutes. We're sure they all felt a little sick after the fluorescent lights were turned on to reveal the spread of that little