Bang Goes the Theory - Tooth Decay and Refreezing food

Seizoen: 5 - Aflevering: 6 / 32 - Eerst uitgezonden: 19 september 2011 - Episode ID: 583797

Dallas attempts to find out what causes tooth decay and gum disease. Yan explains the reason why refreezing food is not a good idea. Jem takes a look at some new research that claims electric lights can play havoc with the way we sleep.