A colour-changing fabric can provide heating or cooling ... causing the colour to change — from white and reflective at higher temperatures to black and heat-absorbing at lower ones.

Painting rooftops white or covering them with a reflective coating is the best way to reduce air temperature in a city like London during a heatwave. These “cool roofs” should perform better ...

The researchers created a polymer coating that also has nano-to-micro-scale pockets of air that turn it white. “Our paint can be much more reflective than normal paint,” he says. Regular white ...

Adding a white, reflective coating to a rooftop can help keep a house cooler in the summer and save on air-conditioning bills. But if you live in a city with cold winters, the same coating leads ...