Is your state making school zones more dangerous?

Ignaz Semmelweis was a physician working in a maternity ward in the 1840s. He noticed something disturbing: women giving birth in the ward staffed by doctors and medical students died from “childbed fever” at rates of 10-35%, while a nearby ward staffed by midwives had death rates under 4%.

The key difference was that doctors were coming straight from performing autopsies to delivering babies, without washing their hands. They would dissect cadavers in the morning, then examine pregnant...