This method would make it more likely that people would pasteurize their drinking water. Jones also mentioned the solar cooker's ability to help preserve the environment. An estimated 3 billion people cook their food over fires. It's also estimated that two-thirds of the time you can cook with the sun instead of wood near the equator. Many women and children get sick from smoke inhalation because of the wood and other fuel sources used while they cook.
Solar energy is clean, efficient and renewable.
Not interested in just a scientific advancement, Jones wanted to make the invention practical and available so others could build their own cooker. He wrote two booklets that include a list of needed materials, detailed assembly instructions and a menu of foods with their average cooking times. To test his invention, Jones asked a group of students in La Paz, Bolivia to perform experiments with a variety of solar cookers, including two that are sold commercially. The tests were conducted on a sunny, winter day on a high plain 12,500 feet above sea level. It does take a little longer than traditional cooking methods.