Engineers from the University of Colorado Boulder have made a -thin material that could help keep cool. The engineers developed the new material, that can cool objects under direct . The material does not need energy to work. It does not need to help keep things cool. The new material could do the of air conditioners, which need a lot of energy and water. The material is not like found in . It is a glass-polymer hybrid and is just 50 micrometers thick - about the same as the aluminium foil use for cooking.
The engineers explained how the new material works. When it is put on top of , two things happen. The first is it cools the object underneath by reflecting the Sun's . At the same time, the thing happens - the material takes away from the object underneath. An engineer said: "The key of this technology is that it works 24/7 with no electricity or ….We're excited about the to explore potential uses in the power industry, , agriculture and more." Just 10 to 20 meters of this material could cool down a house in .