In 2019, Buffalo scientists coated aluminum film with a cooling polymer; a small prototype cooled an enclosed box by 11°F by day and 20°F at night

Scientists have engineered a cost-effective film utilizing aluminum foil combined with a polymer layer. This innovative film actively cools confined areas by emitting heat into outer space. By harnessing the proven method of passive radiative cooling, the product's design as a 'solar shelter' substantially boosts its cooling performance during the day, presenting a promising substitute for conventional air conditioning solutions.