New Spanish nanomaterial cools surfaces by up to 12.9C without electricity

Spanish researchers have developed a nanomaterial that cools sun-exposed surfaces by up to 12.9°C without using any electricity. Made from a specially shaped polymer called PVDF, it reflects 82.4% of solar radiation and releases heat directly into space through a natural atmospheric window. With cooling already consuming nearly 20% of global electricity, this affordable material could reduce reliance on air conditioning across buildings, vehicles, and electronics.