Episode 406. Topic: Air conditioning. Theme: Home technology. 

How does air conditioning work? Why is it kind of like human sweating? How has air conditioning changed human civilization?

Twitter: @3minutelesson  
Email: 3minutelesson@gmail.com  
Instagram: 3minutelesson  
Facebook: 3minutelesson  

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