03:28 — Richard Ambrose explores the history of toothpaste, including a look at old brands that made one's gums bleed or even contained radioactive material!
02:23 — There are many types of wood, but yew is the choice for making the medieval longbow. Richard Ambrose and Jonny Phillips learn why the properties of ye (more…)
02:47 — Have you always wanted to own a hovercraft but can't afford one? Richard Ambrose and Jonny Phillips might have the answer. Learn how you can build you (more…)
02:45 — Richard Ambrose and Jonny Phillips have some downhill fun by testing the effectiveness of teflon plastic.