Michael Mosley brings to life surprising medical research, revealing the improbable sequence of events that led to your birth. Breathtaking CGI takes viewers inside the body to show millions of sperm on their dangerous race towards the egg, discover the ingenious ways that the woman's body selects the very best, see a body begin to self-assemble and, in a television first, watch a human face come together. Throughout the program we follow the progress of a couple who are expecting triplets; from the 4D scan when they first come face to face with their babies to a dramatic finale - the birth. We also meet a woman expecting her 16th baby and the oldest conjoined twins in the world.

Originally released by BBC Worldwide Learning, 2011. Streaming video file encoded with permission for digital streaming by Infobase on November 21, 2019.