This short film introduces the topic of reproduction and that babies start from an egg and sperm. This series of short films ...

A colony of human embryonic stem cells is seen on a computer monitor at the University of Wisconsin–MadisonDarren Hauck / Getty Researchers at Newcastle University in England report they have coaxed ...

Human sperm have long been a subject of fascination—not just for their role in fertilization, but for their remarkable ability to navigate through some of the most viscous environments in the body.

A new mathematical model predicts that mammalian sperm cells have two distinct swimming modes. This prediction opens new questions about potential connections between sperm cells' motor activity and ...