Alan Davies and Marcus Du Sautoy get to grips with the problem of measuring the exact length of a piece of string. They visit the National Physics Laboratory, look at how a metre is defined now ...

In today's edition of Play Smart, elite mid-amateur golfer Jonathan Bale explains how to use a piece of string as a training ...

A piece of 50,000-year-old string - the oldest yet discovered - found in a cave in France has cast further doubt on the idea that Neanderthals were cognitively inferior to modern humans.