THE PLAGUE IN FLORENCE: Yersinia pestis caused massive outbreaks in Europe and parts ... Many villages were depopulated, and Norway as an independent nation went to ruin. Drawing by Theodor Kittelsen ...

Once they’re there, germs can survive and thrive, as bacteria often love warm, moist environments like your kitchen sink. Depending on how you use it, Schonberger said, you could find “any number of ...