"A kitchen sponge is not your enemy. But it can be very dirty. Last week, scientists published a study revealing how densely packed your dirty kitchen sponge is with microscopic bacteria. After I wrote an article about their work, readers flooded my inbox with good questions, so I asked around for some answers."
https://www.nytimes.com/2017/08/11/science/sponges-dirty-bacteria-contamination.html?mcubz=3
"A kitchen sponge is not your enemy. But it can be very dirty. Last week, scientists published a study revealing how densely packed your dirty kitchen sponge is with microscopic bacteria. After I wrote an article about their work, readers flooded my inbox with good questions, so I asked around for some answers."