Danish physicist Niels Bohr was one of the greatest scientists of the twentieth century.He won the Nobel Prize in 1922 for his revolutionary contribution to quantum theory.He was engaged in a lifelong intellectual duel with Einstein - and modern experiments have vindicated his view.During the Second World War, he debated with Werner Heisenberg in Copenhagen about his former student's work on the Nazi atomic bomb.He escaped Nazi-occupied Denmark and was welcomed by Robert Oppenheimer to the Manhattan Project to build the atom bomb. He campaigned tirelessly for international arms control during the Cold War.He was a prime mover behind the establishment of CERN, the centre for nuclear physics in Switzerland.The Man Who Broke Reality, by acclaimed science writer Philip Ball, is a compelling portrait of one of the twentieth century's most inventive and iconoclastic thinkers - a scientist whose insights continue to shape our understanding of the universe and our place within it.