The Secret Genius of Modern Life Series 2 Episodes Available now
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Lift
6/6 Hannah examines the lift, entering a 246m high lift shaft to test her fear of heights.
![](https://ichef.bbci.co.uk/images/ic/320x180/p0gv6vgb.jpg)
Headphones
5/6 Hannah Fry finds out how today's teeny earbud technology works.
![](https://ichef.bbci.co.uk/images/ic/320x180/p0gv6vd8.jpg)
Microwave
4/6 Hannah Fry discovers the hidden WWII radar technology that heats up baked beans.
![](https://ichef.bbci.co.uk/images/ic/320x180/p0gsgkkx.jpg)
Smartphone
3/6 Hannah uncovers the technological game changers that have made the smartphone a reality.
![](https://ichef.bbci.co.uk/images/ic/320x180/p0gqkd98.jpg)
Vacuum Cleaner
2/6 Hannah takes a look at the vacuum cleaner, going behind the scenes with Dyson.
![](https://ichef.bbci.co.uk/images/ic/320x180/p0gqkkxx.jpg)
Passport
1/6 Hannah gains access to a site where staff work to make the British passport secure.