We're jumping back just a couple of years to an episode on Ignaz Semmelweis made a connection between hand hygiene and the prevention of childbed fever in the 19th century.
Stuff You Missed in History Class
2,269 clip(s)
Behind the Scenes Minis: Bad Poetry
Sir Humphry Davy and the Miner’s Lamp (Part 2)
Sir Humphry Davy and Nitrous Oxide (Part 1)