Extras

Video thumbnail: Human: The World Within Episode 6 Preview | Birth

Human: The World Within

Episode 6 Preview | Birth

Learn the story of human reproduction from attraction to a baby’s first breath.

Episode 6 Preview | Birth

Video thumbnail: Human: The World Within Our Sense of Smell

Human: The World Within

Our Sense of Smell

Our sense of smell is shaped by hair follicles in our sinus known as cilia.

Our Sense of Smell

Video thumbnail: Human: The World Within The Human Body's Five Senses

Human: The World Within

The Human Body's Five Senses

An introduction into the amazing functions of the human body's five senses.

The Human Body's Five Senses

Video thumbnail: Human: The World Within Episode 5 Preview | Sense

Human: The World Within

Episode 5 Preview | Sense

Explore the incredible world of human sensation and how it defines our reality.

Episode 5 Preview | Sense

Video thumbnail: Human: The World Within The Adaptive Quality of Our Senses

Human: The World Within

The Adaptive Quality of Our Senses

When we lose one of our senses, others fill the void to process the lost information.

The Adaptive Quality of Our Senses

Video thumbnail: Human: The World Within The Immune System

Human: The World Within

The Immune System

An introduction into the amazing functions of the human body's immune system.

The Immune System

Video thumbnail: Human: The World Within Episode 4 Preview | Defend

Human: The World Within

Episode 4 Preview | Defend

Uncover how the human body defends itself in an increasingly dangerous global environment.

Episode 4 Preview | Defend

Video thumbnail: Human: The World Within The Gut Microbiome is the Hub of Our Immune System

Human: The World Within

The Gut Microbiome is the Hub of Our Immune System

The Gut microbiome contains bacteria that keep us healthy when well fed and tended to.

The Gut Microbiome is the Hub of Our Immune System

Video thumbnail: Human: The World Within Episode 3 Preview | Fuel

Human: The World Within

Episode 3 Preview | Fuel

Journey through the factory at the center of our bodies that turns food into energy.

Episode 3 Preview | Fuel

Video thumbnail: Human: The World Within The Digestive System

Human: The World Within

The Digestive System

An introduction to the amazing functions of the human body's digestive system.

The Digestive System

Video thumbnail: Human: The World Within The Science Behind the Pulse in Our Bodies

Human: The World Within

The Science Behind the Pulse in Our Bodies

Human life depends on our bodies ability to process oxygen to keep our cells alive.

The Science Behind the Pulse in Our Bodies

Video thumbnail: Human: The World Within Functions of the Heart and Lungs

Human: The World Within

Functions of the Heart and Lungs

Our heart and lungs circulate oxygen throughout our blood vessels to keep cells alive.

Functions of the Heart and Lungs

Video thumbnail: Human: The World Within Episode 2 Preview | Pulse

Human: The World Within

Episode 2 Preview | Pulse

See the world beneath the human heartbeat that makes our craziest feats possible.

Episode 2 Preview | Pulse

Video thumbnail: Human: The World Within Blood Vessels and Circulatory Movement

Human: The World Within

Blood Vessels and Circulatory Movement

Human bodies are designed to move in order to circulate blood and nutrients to every cell.

Blood Vessels and Circulatory Movement

Video thumbnail: Human: The World Within An Introduction to the Brain and Neurons

Human: The World Within

An Introduction to the Brain and Neurons

The brain is mission control of the human body and the nervous system.

An Introduction to the Brain and Neurons

Video thumbnail: Human: The World Within The Human Body's Nervous System

Human: The World Within

The Human Body's Nervous System

An introduction to the amazing functions of the human body's nervous system.

The Human Body's Nervous System

Video thumbnail: Human: The World Within How Pain is Processed in Our Nerves

Human: The World Within

How Pain is Processed in Our Nerves

Pain travels to our brain as neural impulses when something is wrong in our bodies.

How Pain is Processed in Our Nerves

Video thumbnail: Human: The World Within Episode 1 Preview | React

Human: The World Within

Episode 1 Preview | React

See how the technology of the brain and nervous system shape our experience of the world.

Episode 1 Preview | React

Video thumbnail: Human: The World Within Data Processing in the Brain

Human: The World Within

Data Processing in the Brain

All sight is translated into electrical impulses via the retina to the brain.

Data Processing in the Brain