Radio and television are very popular in the world today. Millions of people watch TV. Perhaps more people listen to the radio. The TV is more useful than the radio. On TV we can see and hear what is happening in the world. But radio isn't lost. It is still with us. That's because a radio is very small, and it's easy to carry. You can put one in your pocket and listen to it on the bus or on your bike when you go to school.