The world has changed a lot since a divorced mother of two teamed up with a St. Louis gynecologist to study the physiology of sex.
Masters and Johnson's first book, Human Sexual Response, made Virginia Johnson and William Masters household names in the 1960s. More than any other scientists before them, they approached sex as a biological process to be observed, measured and analyzed.
Two prominent Catholic groups are finding themselves, once again, on opposite sides of a key issue regarding the Affordable Care Act.
Three years ago, the Catholic Health Association, whose members run hospitals and nursing homes across the country, backed passage of the health law. The U.S. Conference of Catholic Bishops, which represents the hierarchy of the church, opposed it.
Now the groups are divided over the law's requirement for most employer-based health insurance plans to provide women with birth control.
Women of all ages will soon be able to buy emergency contraceptives over the counter without a prescription, now that the Obama administration has decided to stop fighting a judge's order to make the drugs more easily available.
But better access to emergency contraception doesn't necessarily reduce rates of unintended pregnancy, research has found. Why that's so remains unclear, although researchers have some ideas.