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

Who hasn't seen it before: the view through the microscope in which a sperm penetrates an egg cell and fertilizes it. This fundamental step in procreation happens dynamically and seemingly without ...

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

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 ...