Darwin's Dilemma, Human Powered Hydrofoil, Lie Detectors
- Episode aired Mar 29, 2010
- TV-PG
- 28m
Jem investigates new research that suggests electric lights can play havoc with our sleep, Dallas downs his toothbrush to discover what causes tooth decay and gum disease, and Dr Yan explain... Read allJem investigates new research that suggests electric lights can play havoc with our sleep, Dallas downs his toothbrush to discover what causes tooth decay and gum disease, and Dr Yan explains why refreezing food is not a great idea.Jem investigates new research that suggests electric lights can play havoc with our sleep, Dallas downs his toothbrush to discover what causes tooth decay and gum disease, and Dr Yan explains why refreezing food is not a great idea.