(Megastructures/2006) This programme highlights the most important building materials on the planet. Each episode features a main ingredient that has been the cornerstone for not only some of the greatest structures on the planet but also the essentials of everyday living -covering everything from the steel used in the Empire State Building to the steel used for disposable razors and safety cages in cars. Each hour will delve into the megamaterials that have allowed engineering extremes. When conventional wisdom says something is physically impossible, but scientists and engineers make it possible, that?s extreme.