Radio 4 in Four - Why we move in and out of ice ages every 100,000 years - ÃÛÑ¿´«Ã½ Sounds

Radio 4 in Four - Why we move in and out of ice ages every 100,000 years - ÃÛÑ¿´«Ã½ Sounds
Why we move in and out of ice ages every 100,000 years
Scientists think they have discovered why we move in and out of ice ages less frequently.