In this extensive encyclopedia packed full of simple science for kids aged 9+, David Macaulay's beautiful illustrations show the inner workings of each machine, from clocks and watches to jet engines and the Internet. The Way Things Work explains every machine you've ever wanted to understand, as well as some you've probably never thought about before. From the basic lever to the modern microprocessor, this bestseller has now been completely updated with the latest technologies - find out how a touchscreen works, look inside an optical mouse, and see the inner workings of a smartphone.