Columbia Engineering built a pigment-free paint filled with microscopic air pores; it stayed 6°C below surrounding air during hot desert tests in Arizona

Researchers at Columbia University and Purdue University have unveiled an experimental paint-like coating that can cool surfaces to temperatures below the ambient environment. This cutting-edge material reflects over ninety-six percent of solar energy and effectively radiates heat by utilizing air pockets instead of traditional pigments. Although this promising technology is in the exploratory phase, it is not yet available for commercial use.