<p>Episode 31. Topic: The history of toothpaste. Theme: Hygiene. The history of toothpaste. How old is toothpaste and what did it look like before we understood the causes of tooth decay? </p>

Washing your hands | Hygiene

Education podcasts are great - but sometimes you just want an appetizer of knowledge. On 3 minute lesson, I attempt to communicate an interesting topic concisely and in less than 3 minutes.