When a teenage girl in rural Nepal gets her period, an ancient tradition may drive her to sleep outdoors. But one 15-year-old is trying to break the taboos around menstruation.
Scientists spent decades arguing that women weren't suited for space travel because of menstruation. Even now, a lot of us are wondering how astronauts manage that time of the month.
Doctors and parents often miss the signs of female athlete triad syndrome — low energy, low bone density and irregular menstruation in an otherwise healthy-looking girl or teen.
Donald Trump has created a "menstruation moment" with his apparent implication (later denied) that a Fox News anchor who asked tough questions was having her period.
It's menstrual hygiene. The topic makes many folks uncomfortable. Yet in the developing world, it's a problem that keeps girls from going to school and playing sports. Now things are changing.