From agriculture to the X-ray machine, hosts Robert Lamb and Joe McCormick explore the inventions we created, and how they created us.


December 24, 201853 min
Toothpaste is a vital substance in our war against tooth decay, but when did we first rub this stuff into our teeth and gums? In this episode of Invention, Robert Lamb and Joe McCormick squeeze out the history and origins of toothpaste.