The Khamsa home in Senegal, built with earth bricks and energy independent due to solar panels and a wind turbine, was actually 15 percent cheaper to build than a traditional home. The walls, which are thicker than those used in standard concrete construction, help moderate the interior temperature in a region where the climate swings from dry to humid throughout the year, absorbing humidity and cooling the home during warm weather while moderating temperature and improving indoor air quality.