Season 1 · Episode 5
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Fitness Tracker
Thu, Dec 8, 2022
Hannah Fry finds out how 1970s car crashes helped us to count our steps, why WWII dog-fights led to a crucial health monitor and how fitness trackers are even being used to catch killers.
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Thu, Dec 8, 2022
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The Secret Genius of Modern Life
17 episodes
Episode
S1 · E5
in The Secret Genius of Modern Life
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S1 · E6
Trainer
Thu, Dec 15, 2022