pdrc—you know, passive daytime radiative cooling

Slashdot refers us to a team of researchers at work at the Columbia School of Engineering who are developing a paint-like coating that can be applied to virtually any surface—rockets on re-entry, cars, pavements, roofs and entire buildings, that radiates and reflects heat far more efficiently than the pigments that we are used to without relying on cooling systems that ultimately contribute more to nascent heat and climate change.
These so called hierarchically porous polymers contain nanoscale cavities that redistributes heat along the surface, multiplying the effect of colour as a thermal mitigator alone and prevent energy from settling in and causing overheating that diverts resources to restoring a balance and demonstrate universal potential—especially for those areas heating up too quickly where traditional air-conditioning is impractical and a drain.