biofilms

There is something inherently creepy about yeast and fungus. At least that will probably be your assessment if you watched both seasons of The Last of Us.

“The hygiene hypothesis suggests that our immune system works best when it has been exposed to a diversity of foreign others and that population measures of hygiene, such as running water, waste disposal systems have not so much

Unwanted microorganisms are a fact of life. Bugs grow everywhere we don't want them, from our showers and sinks to our toilets and toothbrushes.