The Human Body

The human body is an amazing machine. Find out how it works, from head to toe.

Brain

Stimulate the brain and find out how this fantastically complex organ is the body's primary control center.

Heart

Every cell in the body depends on this muscle, the body's hardest-working organ.

Digestive System

Feed the body different foods and discover how this system is the body's fuel factory.

Lungs

Learn how the lungs provide the breath of life and see the debilitating effects of asthma.

Skin

Watch how aging and stresses like cuts and sunlight can affect the body's largest organ.

Read This Next

86,000 wild mustangs that roam the West are at the center of raging controversy

Prehistoric wild dog found at iconic human fossil site

More 'good fire' could help California control future catastrophes

Go Further

Subscriber Exclusive Content

Why are people so dang obsessed with Mars?

How viruses shape our world

The era of greyhound racing in the U.S. is coming to an end

See how people have imagined life on Mars through history

See how NASA’s new Mars rover will explore the red planet

Why are people so dang obsessed with Mars?

How viruses shape our world

The era of greyhound racing in the U.S. is coming to an end

See how people have imagined life on Mars through history

See how NASA’s new Mars rover will explore the red planet

Why are people so dang obsessed with Mars?

How viruses shape our world

The era of greyhound racing in the U.S. is coming to an end

See how people have imagined life on Mars through history

See how NASA’s new Mars rover will explore the red planet