Good demonstration shows quick spread of virus May 15, 2020 20:46:04 GMT -7 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by Admin on May 15, 2020 20:46:04 GMT -7 Black light experiment shows how quickly a virus like Covid-19 can spread at a restaurantwww.cnn.com/2020/05/13/health/japan-black-light-experiment-coronavirus-trnd-wellness/index.html