Cooling buildings by nearly 5ºC possible thanks to new whiter-than-white paint

By Andrew Parnell, Research Fellow in Physics and Astronomy, University of Sheffield

℃From icy tundras to billowing clouds, the colour white crops up repeatedly in our planet’s palette. This colour provides a natural way for light from the sun to reflect back from the Earth’s surface and into space. This effect – known as the planet’s albedo – has a huge impact on average global temperature.

Imagine a world covered entirely with oceans. Although the idea might evoke a refreshing sense of coolness, the absence of reflective white areas would in fact see Earth’s average surface temperature increase…

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