Nuclear weapons have played an important role in times of war and peace since they were first used in 1945. The use of these weapons has been a topic of strong debate for over 70 years. Readers explore both sides of the debate surrounding these weapons. They also learn the origin of nuclear weapons and the science and technology behind this game-changing development in modern warfare. The environmental impact of nuclear warfare is also addressed. Readers are introduced to this topic through informative main text, additional fact boxes, and photographs.