he machines that dig, build and demolish are big, noisy and fascinating. In this book you will see the best of them, the biggest and the most amazing. Whether they are at work in mines, on building sites or in your own street, these machines are STEM in action. Machinery is everywhere in our modern world, and even way out in space. Designed by scientists and engineers, the marvelous machines they have created shape our lifestyles and show us how important technology is for us all.