A bind-up of four books covering the ideas, events, inventions and discoveries that have changed the course of history. Short yet fact packed, they are a mine of information. For example, in Discoveries we learn about the discovery of DNA, antibiotics (if they had been around at the time of the Black Death 95 per cent of victims would have survived ), gravity and the Americas. In Events we learn about a man landing on The Moon, the knocking down of the Berlin Wall, the fall of Rome and the assassination of JFK. In Ideas we learn about Marxism, Communism, Darwinism, Christianity, Feminism and Suffrage. In Inventions we learn about the invention of the internal combustion engine, the wheel, railways, anaesthetics and the atom bomb.