Darwin's Dilemma, Human Powered Hydrofoil, Lie Detectors
- एपिसोड aired 29 मार्च 2010
- TV-PG
- 28 मि
अपनी भाषा में प्लॉट जोड़ेंJem 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... सभी पढ़ेंJem 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.