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 ...

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

By Will Dunham WASHINGTON, March 30 (Reuters) - As humankind moves toward the goal of establishing a long-term presence on ...

Life’s most important rendezvous occurs between a sperm and an egg, and scientists have long debated precisely how this get-together occurs. In particular, with the precise knowledge of a human ovum’s ...

Scientists based at The Rockefeller University have created an experimental system that models the implantation of a human embryo. The new system, an adaptation of one used to recapitulate the ...

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