Latest Episodes
Learn how humans grow from a single cell to beings of more than 37 trillion cells.
See how experience teaches the brain and body to work together and develop new skills.
Discover the miraculous ways the human body works to stay alive and healthy.
Extras
As Lew pushes himself, his body demands more oxygen to keep it going.
From an early age, we learn how to control the movements of our bodies.
We learn to work together by reading the emotions and facial expressions of others.
Danny demonstrates how new motor skills must be learned and developed with practice.
What determines when we start puberty has until recently been a mystery.
What Recker does during this growing period will change the structure of his brain.
The story of how our body deals with damage and repair can be told through Kate's feet.
Dr. Ott takes skin cells and reprograms them into stem cells.