Inventors have been inventing since time began, but which inventions do we value the most? A recent poll put the bicycle at number one on the basis that it is a simple, ecologically sound means of transport, and universally useful. It was seen as the best thing since sliced bread – except that sliced bread is a much more recent innovation than the bicycle; it was invented in 1927 by Otto Rohwedder. Tracing the origins of more than 230 inventions in chronological order, this book captures the essence of invention from 500,000 BC to the modern day, showing the historical significance of each and how ultimately their creation changed the world.