Photothermal fabric ‘skin’ could cut heating energy up to 23%

Researchers at the University of Massachusetts Amherst in the US have unveiled a tool to combat climate change, fossil-fuel dependency, skyrocketing home-heating bills and gentrification all at once – a simple fabric treated with a special photothermal dye that, when placed on outside walls, can help keep a home warmer over the course of a day.