There are dozens of ways to destroy the Earth. We could get hit by an asteroid, a nuclear war could set the world on fire or even something less dramatic, for instance avian flu, could wipe out humanity. All these scenarios have been widely discussed and portrayed in Hollywood movies. However, the question, which is equally fascinating, yet rarely discussed, is how would we rebuild the world after such a catastrophe? In this talk at The Royal Institution, Lewis Dartnell tells the story of the post-apocalyptic reality and how the survivors would rebuild the world. Fore more similar high-definition lectures visit the links below and The Royal Institution website.