Utah startup says it grew human sperm in lab, creating embryos in early test of infertility breakthrough.

Paterna Biosciences says it has determined the set of instructions needed to turn sperm-making stem cells into "normal, ...

Now, scientists are taking control of that formula. The equation for making a human is not straightforward anymore. In a ...

Sperm cells are at their highest quality during summer months, a new study has found, although that doesn’t mean it will lead ...

Add Yahoo as a preferred source to see more of our stories on Google. Fathers may carry traces of their childhood trauma in their sperm cells, a new study finds. The new research, published Jan. 3 in ...

(Francesco Carta fotografo/Moment/Getty Images) The last time a male contraceptive was approved for use in the United States ...

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 ...

Monash researchers have discovered that swimming sperm create swirling fluid vortices—shaped like rolling corkscrews—giving them an extra boost in the race to the egg. The study, published in Cell ...