Episode 32. Topic: Washing your hands. Theme: Hygiene. We've all been told to wash our hands for 20 seconds (especially given the pandemic). But why 20 seconds and what does hand washing actually do to viruses and bacteria? 

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? 

Episode 30. Topic: Dropping out. Theme: Education. What are the causes and consequences of dropping out of school around the world? And are there really benefits of being a college dropout? 

Episode 29. Topic: Does a second language help? Theme: Education. 

Growing up, is there an advantage or disadvantage to bilingualism? And does that change in adulthood?

Twitter: @3minutelesson  
Email: [email protected]  
Instagram: 3minutelesson  
Facebook: 3minutelesson  

New episode every Monday, Wednesday, and Friday! Find us everywhere podcasts are found.

Episode 28. Topic: Cram schools. Theme: Education. What are cram schools and why are they so popular particularly among Asian countries? 

Episode 27. Topic: Intelligence Quotient. Theme: Education. Was does IQ mean, where does it originate, and what are the limits of this "intelligence" scale? 

Episode 26. Topic: Summer vacation. Theme: Education. How did summer vacation become a world-shared policy? Hint: It has nothing to do with farmers. 

Episode 25. Topic: The Rockefeller Christmas tree. Theme: Trees. What is the history and logistics of the giant Rockefeller Tree in New York City? 

Episode 24. Topic: The love of palm trees. Theme: Trees. Why do people love palm trees so much and why are they in Los Angeles? 

Episode 23. Topic: The sequoia. Theme: Trees. 

Learn about the tallest tree species in the world. Where can they be found? How big are they? How does water manage to get to the top? Why are they endangered? Why is their genome different from other trees?

Twitter: @3minutelesson  
Email: [email protected]  
Instagram: 3minutelesson  
Facebook: 3minutelesson  

New episode every Monday, Wednesday, and Friday! Find us everywhere podcasts are found.