A team of engineers has created a -thin material that could help keep buildings . The team is from the University of Colorado Boulder in the USA. Engineers from the developed the revolutionary new , that is very and can cool objects even under direct . The material does not need energy to work nor does it need water to help keep things cool. The engineers say the new material could provide an to air conditioners, which are to run and need a lot of water. The material is unlike anything found in nature. It is a glass-polymer that is just 50 micrometers thick. That's thicker than the aluminium foil we use for cooking.
The engineers explained how their material works. They said when it is put on top of , two things happen. The first thing is that it cools the underneath by reflecting the Sun's rays back into . At the same time, the second thing happens - the material removes the object's own heat and sends that into the . An engineer said: "The key of this technology is that it works 24/7 with no electricity or water ….We're excited about the to explore potential uses in the power , aerospace, agriculture and more." Another researcher said: "Just 10 to 20 square meters of this material on the could nicely cool down a…house in summer."