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Human: The World Within
Our Sense of Smell
The experience of smell starts when air molecules meet tiny little hairs in our nasal cavity. These hairs are called cilia, and they trap the incoming fumes so they can be processed.
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52:30
See how the technology of the brain and nervous system shape our experience of the world.
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52:33
Explore the incredible world of human sensation and how it defines our reality.
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52:33
Uncover how the human body defends itself in an increasingly dangerous global environment.
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52:33
Journey through the factory at the center of our bodies that turns food into energy.
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52:30
See the world beneath the human heartbeat that makes our craziest feats possible.
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52:30
Learn the story of human reproduction from attraction to a baby’s first breath.