Latest Episodes
See how your time inside the womb has determined your destiny on the outside.
Follow the story of how, from one egg, you took on unmistakably human form in the womb.
Extras
Learn how you became the unique individual you are.
An extraordinary 70-year-long study in longevity has shown some shocking results.
Ectodermal Dysplasia can't stop this internationally recognized model.
Two men with nearly identical lifestyles, but vastly different metabolisms.
A genetic mutation from generations ago causes half of this family to grow 6 fingers.
A misfiring hormone long before birth can change gender later in life.
A baby's parents decide he will undergo surgery to repair a cleft lip.
A small gene pool has lead to color-blindness spreading throughout an island population.
A surfer's risk taking may be tied to testosterone exposure in the womb.
A decades-long study examines how unborn children are affected by stress.