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 ...

The first steps of human development—those that occur within the first few weeks of pregnancy—remain mysterious in many ways. Within a week of fertilization, human embryos form a blastocyst, which ...

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 ...

Using human stem cells, scientists have created human embryo-like structures inside petri dishes. These lab-grown blobs develop multiple structures that mimic a human embryo after implantation into ...

Do Catholics “believe that human life begins at conception” — a formulation that has become ubiquitous in recent weeks? Well, yes, in precisely the same sense that Catholics “believe” that the Earth ...

In the context of the Day of the Unborn Child, March 25, the feast of the Annunciation, Archbishop Enrique Benavent Vidal of Valencia, Spain, issued a call to defend human life from conception to ...