Nina looks at household inventions and finds out how they work. Boston, Cooper and Jay ask Nina how a clock works, and they see a similar invention that lifts boats. Show more
Discover 11,128,835 listings and 279,914 playable programmes from the BBC
Nina looks at household inventions and finds out how they work. Boston, Cooper and Jay ask Nina how a clock works, and they see a similar invention that lifts boats. Show more