On Earth human sperm tend to know where to go when it comes to fertilizing an egg in utero. A new study suggests human sperm ...

Sperm may lose their ability to navigate in microgravity, raising new questions about whether human reproduction is possible in space.

Having a baby in space may require a bit more direction, with new Adelaide University research revealing the navigational ...

We all know the drill for reproduction—sperm meets egg. But mice aren’t people. And the same recipe doesn’t work for human reproductive cells. One reason, according to Dr. Mitinori Saitou at Kyoto ...

Researchers at Newcastle University in England report they have coaxed the first human sperm cells from embryonic stem cells, in a remarkable demonstration of how quickly the field of stem-cell ...

New work from UC Davis and the University of Utah shows how the 3D structure of DNA inside a germ cell commits it to develop into a sperm cell. The discovery could improve understanding of fertility ...