February 18th, 2015
Episode 162 of 734 episodes
Nickel is the metal that made the jet age possible, not to mention margarine and bicycle sprockets. In the latest instalment in his journey through the periodic table, Justin Rowlatt travels to Rolls Royce to discover the incredible materials science that this chemical element and its super-alloys have driven, as well as the miniscule market for another, far more valuable metal - rhenium. And Rebecca Henschke travels to the world's biggest source of nickel in a remote corner of Indonesia to discover why that country has decided to impose a ban on raw nickel ore exports and how the industry is coping.