Pettenkofer's ideas about how cholera spread weren’t exactly right, but they still had really beneficial impacts on the way we live.
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)