We use the half-life of a naturally occurring radioactive form of carbon, 'to date cave paintings and fossils. JON CHASE:'Giving us a chance to almost look back in time.' Science presenter Jon ...

These clips are from the BBC series, Curriculum Collections. Suitable for: KS3 and KS4 / GCSE in England, Wales and Northern Ireland and 3rd Level, National 4 and 5 in Scotland. A scale model of ...