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E1 • The Bank Card

1. 51 min
2. TV-PG
3. CC
4. HD

Hannah Fry examines the bank card, including a surprising, sinister backstory.

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E2 • The Food Delivery App

1. 50 min
2. TV-PG
3. CC
4. HD

Hannah Fry tucks into the staggering technology behind the latest food delivery apps.

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E3 • Virtual Assistants

1. 49 min
2. TV-PG
3. CC
4. HD

Hannah Fry delves into the inner workings of virtual assistants, such as Amazon's Alexa.

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E4 • The Electric Car

1. 50 min
2. TV-PG
3. CC
4. HD

Hannah Fry discovers how a breakthrough in camcorder batteries led to an electric empire.

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E5 • Fitness Tracker

1. 50 min
2. TV-PG
3. CC
4. HD

Hannah finds out how 1970s car crashes helped us to count our steps and improve fitness.

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E6 • Trainer

1. 50 min
2. TV-PG
3. CC
4. HD

Hannah discovers how delicious breakfast waffles helped to transform our sneaker soles.