Vacuum Cleaners

Mary Mallon became known as Typhoid Mary in the early 20th century. She has often been vilified in in modern references, though her story is actually quite complex. Research: "Mary Mallon." Encyclopedia of World Biography Online, vol. 21, Gale, 2001. Gale In Context: Opposing Vie ...  Show more

This 2022 episode examines the development of a systematic approach to food safety, which didn’t happen until the 20th century. And it's tied directly to NASA trying to make sure astronauts didn’t get food poisoning in space.See omnystudio.com/listener for privacy information. 

Ever wondered when and why people started caring about body odors and cleanliness? Well look no further than today's episode. See omnystudio.com/listener for privacy information. 

It was time to clean house. Contact advertising@airwavemedia.com to advertise on History of the Second World War.  History of the Second World War is part of the Airwave Media podcast network. Learn more about your ad choices. Visit megaphone.fm/adchoices 

In episode 265, we get curious about vacuum cleaners for Cash and Scout of Victoria, Australia, Ellis of Vancouver, Canada, Orion from Ohio, and Parker and Alex from Arizona.  How were vacuums invented and how do they work?  Is "vacuum" an appropriate name for the cl ...

Today, soap is ubiquitous. It comes in thousands of forms, brands, and varieties -- but this wasn't always the case. In today's episode, Ben, Noel and Max explore the theoretical origin story of soap, and how humanity eventually decided (after a few stops and starts) to literally ...  Show more