Paul Beesley - Why do we have leap years? Here's the explanation - ÃÛÑ¿´«Ã½ Sounds

Paul Beesley - Why do we have leap years? Here's the explanation - ÃÛÑ¿´«Ã½ Sounds
Why do we have leap years? Here's the explanation
Paul talks to Dr. Chris Copperwheat, Astrophysicist at Liverpool John Moores University.