Female mammals—including humans—are born with all of their egg cells. Of a woman's one to two million egg cells, about 400 ...

The first mice to be created from two fathers, a phenomenon known as androgenesis, have now produced healthy offspring for ...

New companies are working to commercialize in vitro gametogenesis, or IVG, a technology that could make human eggs and sperm in the lab from any cell in the body.

Mice who were created by scientists using the genetics of two biological fathers have gone on to have their own offspring ...

Demand for egg freezing has skyrocketed as women put fertility on hold. The costly procedure has brought happy endings to some women, but it doesn't offer any guarantees.