Book excerpt: An in-depth look at the top 100 inventions through the ages, ranked in order of their impact on the world. Discover the scientific, cultural and historical factors that determine each invention's rank and marvel at the array of authentic patent drawings. packed with details of the setbacks and breakthroughs, plus anecdotes describing the methods and madness behind the innovations that have shaped our lives, The 100 Greatest Inventions of All Time is an entertaining and illuminating read for anyone interested in the miracles of ingenuity that have transformed the world.