Have you ever wondered how long a clock can keep running, and how time was synchronised before the digital age? Why do rock crystals set the tempo of our daily existence, and how can we fight back against the remorseless beat of the clock?

David Rooney, Keeper of Technologies and Engineering at the Science Museum, reveals the secrets and stories behind precision time-keeping, which rules so many aspects of the modern world and our lives.

Suitable for ages 10+