During the summer of 1908, twelve-year-old Constantine Boyd is witness to an explosion of home-spun investigation--from experiments with cave-dwelling fish without eyes to scientifically bred crops to motorized bicycles and the flight of an early aeroplane. In 1920, a popular science writer and young widow tries, immediately after the bloodbath of the First World War, to explain the new theory of relativity to an audience (herself included) desperate...