The moment Rachna, 19, steps behind the microphone she is a changed person. Now a role model for girls in her village, she remembers a time when she was not even allowed to leave the house without a male escort. Today, of course, Rachna's voice is heard in every home in the remote corners of Lalitpur, a district in the impoverished, drought-affected Bundelkhand region of Uttar Pradesh (UP), India's largest state.

Breathing is the most important aspect of a broadcast voice because breathing is the energy for speech. If there's anything wrong with your energy source, you know that everything will suffer. Imagine trying to make a call on your cell phone when the battery is dead. No way, right? Well the same is true for speech. Without the energy of the breath, nothing performs as it should.

In rural Lofa County, Liberia, at the country's northernmost tip, local radio station manager QuaQua Miller is committed to building peace where civil war once raged. He travels from village to village on his "Radio Life" station scooter, fueled by the palm wine he is served, to hear what is on his people's minds.