A、To show the media is a way of modern life. B、To compare and contrast radio and television. C、To illustrate the effect of moder

The media is a general word for radio, television, film, newspapers, magazines and books. These are all ways to communicate with a large number of people in a very short time. Since the arrival of radio, and television in particular, the world has been getting smaller.
    Today by using satellites which go round the Earth, television can reach about 2.5 billion people. An international sports event like the Olympic Games is sent live into the homes of half the people in the world. News pictures of wars and disasters such as earthquakes are seen immediately by people in safe, comfortable homes on the other side of the world. This can change the way people act and think—it can even change the way governments act. For example, in the sixties the terrible news pictures from Vietnam turned the American people against the war there, and in the end the U.S. government had to bring home the troops.