Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 13 · Episode 4 ·
The Incredible Machine
This episode of Horizon explores what actually happens inside our bodies using new optical techniques.
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Episode 4 of season 13 of Horizon: “The Incredible Machine”. Aired 1976-01-26. Watch it online free on ZapFlix.