Eeeew and yet fascinating.
I volunteer regularly at an elementary school and the teacher did an experiment that so fascinated and revolted me that I wanted to share. (I'm generous that way.)
Kirsten (the teacher) had all of the 1st/2nd graders sit in a circle and we had a long discussion about germs. These kids know a lot about germs and bacteria already, I was impressed. Then Kirsten passed around a peeled potato half and had the kids rub their hands all over it. I have to confess by the time it got to me I COULD NOT touch it, it was already so disgusting.
Then, the kids all washed their hands as prescribed by the health department. It took forever.
We all came back to the circle and Kirsten passed around the other half of the peeled potato and the kids rubbed their hands all over it again.
Here are the two potato's after 1 week.
My hands are cracked from so much washing with anti-bacterial soap since then.

