Communities in Peru are advancing an elegant, low-tech solution to water scarcity through fog-harvesting systems made with specialized mesh materials, including experimental designs using cactus-based fibers. In some of the driest coastal and highland regions, where rainfall is scarce but fog is frequent, these systems offer a sustainable way to capture clean water directly from the air. Fog traps work by stretching fine mesh nets between poles in misty zones. As fog passes through, tiny water d