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Back to: Human: The World Within
S1E4
Defend
May 19, 2021
Look at a nature survivalist, rancher twins, a doctor who survived Ebola and the recipient of a cutting-edge cancer therapy to uncover the wildly advanced biology that keeps us alive against all odds.
Full Episodes
Clips and Previews
Episode 6 Preview | React
S1E6
See how the technology of the brain and nervous system shape our experience of the world.
Episode 5 Preview | Sense
S1E5
Explore the incredible world of human sensation and how it defines our reality.
Episode 4 Preview | Defend
S1E4
Uncover how the human body defends itself in an increasingly dangerous global environment....
Episode 3 Preview | Fuel
S1E3
Journey through the factory at the center of our bodies that turns food into energy.
Episode 1 Preview | Birth
S1E1
Learn the story of human reproduction from attraction to a babys first breath.
Episode 2 Preview | Pulse
S1E2
See the world beneath the human heartbeat that makes our craziest feats possible.
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