There are many inventions made in the past that have shaped the world of today. Most of these are very old, such as farming, the wheel or sewers, but some of them are quite new. There are lots of inventions we use today that were unknown before the 1930s. Some things that we take for granted have only been around for a short while - cell 'phones and the World Wide Web for example. Once we get used to an invention, such as the television, the washing machine or the car, it's very hard to imagine life without it.