This pack contains four titles that each take a look at key inventions that have shaped the way we live. The volumes cover the areas of computers, science, space and medicine, and follow the development and progression of items within these areas. They also discuss life before the inventions, their impact, key players, and their mistakes and successes. There are biography boxes of key people, "bad" inventions boxes for particularly disastrous inventions that didn't work, key date charts and "how it works" diagrams.