The history of science is one chock-full of mice and men. Historically, biological and medical research has largely depended on rodents, which provide scientists with everything from cells and organs to behavioral data. That's why a new study in which researchers found that mice actually fear men, but not women, has the potential to be so disruptive. It might mean that a number of researchers have published mouse studies in which their results reflect this male-induced stress effect — and they know nothing about it. "People have not paid attention to this in the entire history of scientific research of...