Why have certain people in history become more notable, memorable, revered and respected than their fellow man? The answer is acts of bravery or courage, life-changing creations of inventions, selflessness, great thoughts or leadership - their lives have altered the course of history. People such as Mandela, Archimedes, Mother Teresa, Bill Gates... Their lives and the acts that they are remembered for are portrayed here; these are the people who changed the world...