It's time to find our pump handle, or to get a right pump handle. Let me explain.

In the 1850's, 500 people died of cholera in just ten days in one London neighborhood, marking the beginning of horrible epidemic. Victorian physician Dr. John Snow of London, now considered one of the fathers of modern epidemiology, had already written a controversial pamphlet suggesting that cholera was not caused by "vapors," but was instead a disease…