In the animal kingdom, penises can be spiked, split, corkscrewed—even detachable. They're one of the most diverse structures ...

New Haven, Conn. — In a common metaphor used to describe human fertilization, sperm cells are competitors racing to penetrate a passive egg. But as critics have noted, the description is also a “fairy ...

Medical professionals and fertility clinics are prohibited, under penalty of law, from experimenting on a prospective parent(s) human reproductive material, including sperm, ovum, or embryo at any ...

SpaceBorn United wants to conduct an IVF experiment in Earth’s orbit to pave the way for long-term space missions. Egbert Edelbroek was acting as a sperm donor when he first wondered whether it’s ...

At this stage, known as gastrulation, a flat and featureless sheet of cells folds into a living blueprint for the body, a ...

Nearly half the embryos studied underwent developmental arrest because of genetic mishaps in early development—a revealing insight that suggests more IVF babies could come to term with changes in the ...

A new study from Karolinska Institutet shows how a small antibody fragment can block fertilization by targeting a key protein on the surface of the egg. This discovery brings a non-hormonal ...

Moira Gleason is a Daily Signal journalism intern. When Donald Trump signed an executive order aimed at lowering costs for and reducing barriers to in vitro fertilization last month, that renewed the ...

Researchers have uncovered how successful chromosome segregation during sexual reproduction is achieved in plants. The discovery, by scientists led by the University of Leicester, could be beneficial ...