jan 1, 1854 - John Snow
Description:
The scientist John Snow had been claiming that cholera was carried in water or food and could be ingested. Colleagues have dismissed his idea. A cholera epidemic has broken out in London, in an area around a water pump. Snow takes a sample of the water from the pump and through a microscope finds it contaminated. He removes the pump's handle and the cholera comes to a quick end.Added to timeline:
Date:
jan 1, 1854
Now
~ 171 years ago