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

Having a baby in space may be far more complicated than expected, as new research shows sperm struggle to find their way in microgravity.

Male and female reproductive systems allow human reproduction. Fertilisation occurs when a sperm and egg join to form an embryo. An embryo develops into an unborn baby in the uterus during pregnancy.

Sexual reproduction is essential for mammals to eliminate harmful genetic mutations that build up through cloning, a research ...

A new study by NASA scientists explores the risks and challenges of human reproduction in space, especially for long missions ...

Epaulette sharks can reproduce without any measurable increase in energy use, stunning researchers who expected egg-laying to be costly. Scientists tracked metabolism, blood, and hormone levels ...