make a radio documentary

1. The equipment is relatively inexpensive and easy to use.
2. A microphone is less intrusive than a video camera. People can be more natural, more themselves.
3. Radio is intimate. When you hear someone’s voice on the radio, it feels as if they’re talking directly to you. It’s like getting a phone call from a friend.
4. The limitation of radio is actually its greatest strength: there are no pictures. Radio forces you to be creative and pay attention to words, sound and language. Radio requires you to be not just a journalist, but a poet and a good storyteller.
5. Remember that many people listen to the radio in their cars. That’s why radio should never be boring, or people will fall asleep. Good radio saves lives.

Source: http://www.radiodiaries.org/makeyourown.html