Manual’s science department recorded a brief message to the Manual community for Mole Day, which is celebrated on October 23. The occasion is based on Avogadro’s number which is approximately 6×10²³.

A mole is an animal that burrows in the ground,
Or a spot on your chin that you gotta shave around.
But there’s another kind of mole of interest to me,
That’s the kind of mole they use in chemistry.

Chorus: A mole is a unit, or have you heard,
Containing six times ten to the twenty-third,
That’s a six with twenty-three zero’s at the end,
Much too big a number to comprehend.