October 23rd marks Mole Day in the United States. Chemistry classes and chemistry enthusiasts celebrate this unofficial holiday with activities, cakes and jokes galore. Here’s what you need to know. A ...

Contrary to what some may think, Mole Day is not about the small animals known as moles. Instead, it revolves around a scientific unit of measurement called the "mole," which represents an amount of a ...

HONOLULU (KHON2) — Mole Day is a special day in the world of chemistry, and it’s celebrated each year on Oct. 23 between the hours of 6:02 a.m. to 6:02 p.m. This day honors Avogadro’s number, which is ...

A mole is a colored spot on your skin caused by a high concentration of pigment-producing cells called melanocytes. The medical term for a pigmented mole is a melanocytic nevus, or simply nevus.