Despite significant biomedical advances in recent decades, the very earliest events of human development¬--those that occur during a critical window just after fertilization--have remained an ...

Early lab work shows reprogrammed skin cells can yield embryos, hinting at future infertility solutions but raising safety ...

Some men produce too many sperms. That little-mentioned fact was the focus of my previous blog post. (See Why Too Many Sperms Spoil the Egg, posted on August 11, 2017.) With too many sperms, an ...

A stunning explosion of zinc fireworks occurs when a human egg is activated by a sperm enzyme, and the size of these 'sparks' is a direct measure of the quality of the egg and its ability to develop ...

In a proof-of-concept experiment, scientists demonstrated that you can create and fertilize human eggs in the lab using sperm ...

A young Black couple sits on a couch smiling, as the man lays his hand on the pregnant belly of his partner If you’re thinking about pregnancy, you’ve probably come across the term implantation in ...

The technique, still in its early stages, could eventually help people facing age, illness, or same-sex infertility become ...