The following references illustrate the fact that a new human embryo, the starting point for a human life, comes into existence with the formation of the one-celled zygote: "Development of the embryo ...

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 ...

Elizabeth Dias is the national religion correspondent for The New York Times, and often writes about faith and politics. For this story, she spoke with scientists, philosophers and spiritual leaders ...

Human bodies have to be built from a single egg cell that's fertilized by a sperm cell. Many rounds of cell division occur as the body is developing, and it seems that there are plenty of chances for ...

*Refers to the latest 2 years of stltoday.com stories. Cancel anytime. In a recent editorial, "Profiles in Punting," The Post-Dispatch asserts that believing that life begins at conception is a ...

Infertility is a challenge that many couples face and it can affect both men and women. There are various reasons for infertility, such as hormonal imbalances, low sperm count, blocked fallopian tubes ...