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 ...

When does human life begin? Science is crystal clear: Human life begins at the moment of fertilization. For centuries, the development of human life within the womb was instinctively understood but ...

A developing fetus bathes in a mixture of cellular secretions and proteins unique to its mother's uterus. Before fertilization, the pH of uterine fluid helps create a conducive environment for sperm ...