Go to episode
The Secret Genius of Modern Life
2022
Published on, 3 months ago
The Secret Genius of Modern Life
Fitness Tracker 1 Season 5 Episode
59 min
2022
7.8
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.
