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

Paterna Biosciences said it has mastered the molecular signals that teach stem cells how to mature into sperm for a promising ...

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

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

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.