Wood is the main source of energy in Cambodia, which has resulted in widespread deforestation. In response, Carlo Talamanca of Spain has developed an alternative - briquets made from coconut shells and dried organic waste. The fuel does not use chopped lumber - giving it a clear advantage. The briquets are inexpensive and burn longer than wood. To reach a wider market, Talamanca is working with a French aid group that turns students into a sales force.