The Telescope Nobody Wanted to Look Through

In 1847, a Hungarian physician named Ignaz Semmelweis made a discovery that should have changed medicine overnight. Working in a Vienna maternity ward where one in ten mothers died of childbed fever, he noticed something stunning: when doctors simply washed their hands between the autopsy room and the delivery room, the death rate plummeted to barely one percent. The answer had been hiding in plain sight — on their own unwashed hands.…