Human: The World Within
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Through the lens of a boxer, a first responder, a cell tower climber and a man with a bionic limb, go deep into the universe of the most powerful machine on earth: the human brain and the vast nervous system it controls.
Episode Clips

The Human Body's Nervous System
An introduction to the amazing functions of the human body's nervous system.

An Introduction to the Brain and Neurons
The brain is mission control of the human body and the nervous system.

Data Processing in the Brain
All sight is translated into electrical impulses via the retina to the brain.

How Pain is Processed in Our Nerves
Pain travels to our brain as neural impulses when something is wrong in our bodies.

Engineering Lost Function Inside the Body
Jason is the only person with a prosthetic arm able to sense feeling in the brain.