Two tiny chains of genetic information: One with a motor; the other a yolk. Somehow they will combine to become the most complex, delicate, sophisticated machine known to man. But exactly how does this process work? Moreover, how does a single-celled organism develop the extraordinary spark that is consciousness? Combining case studies of real life pregnancies with the latest 4-D ultrasound and ultra-high res CGI, this is the story of human fetal development.
Source: Discovery Channel