New study finds microgravity disrupts sperm and embryo development, raising concerns about human reproduction in space.

Researchers have captured the very first real-time, three-dimensional images and videos of a human embryo implanting into synthetic uterine tissue—revealing a key stage in reproduction. The resulting ...

Infertility is a challenge that many couples face and it can affect both men and women. There are various reasons for ...

When sperm meets egg, the start of life is not quiet. Under a special microscope, researchers have watched a tiny light show at fertilization. They see a microscopic flash at fertilization, a burst of ...