A solar oven is a device that harnesses sunlight to create heat energy. It doesn't use any fuel, and it doesn't cost a thing to operate it. It can help slow down the deforestation and desertification caused by harvesting natural resources which are used in conventional fuel production. In theory, no more trees would be cut for use in making charcoal, if everyone switched to using solar ovens. And while the use of a solar oven is not necessarily feasible under all circumstances, a better understanding of their use can open up many doors and new possibilities.