A study of radio. It is part of the Communicating Today series, which looks at important forms of communication in the 21st century and the technology and processes behind them. Each title covers how information is created, sent and received, and why we use that form of communication. There are direct explanations of the underlying science and information about technological developments and technique. The series is designed for Key Stages 2 and 3. The same key areas are outlined in a younger level series, In Touch, aimed at Key Stages 1 and 2.