20th Century Science and Technology is a decade-by-decade account of scientists and their breakthroughs, inventors and their inventions, that have shaped the modern world. A fact-filled text and both full-color and duotone photographs come together to create an exciting presentation of scientific and technological progress in conjunction with other history-making world events of the time.The 1940s began with the Second World War. The scientific discoveries of the 1930s, however, brought this war to an abrupt end with powerful and deadly atomic weapons. In the aftermath of this devastating war, two world superpowers emerged -- the USA and the USSR. Their super rivalry sparked super technological progress that included nuclear missiles, electronic computers, and space travel.