While space agencies are making significant preparations for long-term missions to the Moon and Mars, a fundamental human ...

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

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 ...

A University of Michigan-led study based on a review of genetic and health information from more than 276,000 people finds strong support for a decades-old evolutionary theory that sought to explain ...