As a graduate of medical school and practicing pediatrician, Dr. Julie Currin was intimately aware of the amazing stages of fetal growth and development occurring during each of her three pregnancies.

It wasn't until her own sister's pregnancy, however, that Currin realized how little reliable and accessible information was available to expectant parents who haven't had the benefit of complex embryology and anatomy classes.

So, with her sister and her sister's rapidly growing unborn child in mind, Currin set out to translate the complex stages of growth she learned about...