Common variable immunodeficiency (CVID) is a type of genetic condition called primary immunodeficiency disease (PIDD) that causes low levels of antibodies (protective proteins) in your body. This ...

In 1985, graphic novelist Alison Bechdel came up with criteria for whether she'd watch a movie. It's become known as the Bechdel test, and it's surprisingly hard for films to pass these days. After ...