Many state legislatures are seriously considering human embryos at the earliest stages of development for legal personhood. Total abortion bans that consider humans to have full rights from the moment ...

The majority of fertilized eggs die and are resorbed into the body. ZEISS Microscopy/Flickr, CC BY-SA As an evolutionary biologist whose career has focused on how embryos develop in a wide variety of ...

Who hasn't seen it before: the view through the microscope in which a sperm penetrates an egg cell and fertilizes it. This fundamental step in procreation happens dynamically and seemingly without ...

How does a baby develop inside the womb? Fox News looks at the various stages of development from conception to birth. Pregnancy tends to follow a well-understood and predictable course. But according ...

Scientists have shed light on an important stage of early embryonic development that has never been fully mapped out in humans before. Due to more readily available samples, studies so far have ...