this is the Technology Report.Researchers at Stanford Universityhave developed a new materialthat can move heat out of buildings and into space.The researchers saythe material can cool buildings even on hot days.The cooling material is a very thin sheet with many layersthat could be placed on a roof like solar panels.However, instead of turning sunlight into energy as solar panels do,the material turns heat into infrared radiation.Shanhui Fan is an electrical engineering professor at Stanford University.He says that the panels have a layer of material that is like sand.He says that the panels act like a mirror.They take heat out of buildings and reflect the light from the sun.He says both the heat and sunlight are sent 100 kilometers into outer space."It's a structure that cools itself without electricity input,even under the sun.So, what it does is basically radiate heat to outer spaceand also reflect the sunlight so it doesn't get heated up by the sun.And the net result is you get somethingthat if you put on the roof will have a temperaturebelow ambient air temperature by a significant amount."The panels are cool to the touch, even in the sun.Researchers say they can reduce the indoor temperatureto nearly 5 degrees Celsius below the temperature outside.Mr. Fan says it is like having a window into space.He says the heat is sent directly into space without warming the air.He says buildings in developing countriesthat do not have electricity or air conditioning could use the panels."In areas where one is off-grid, there is a significant potential benefitfor storing medicine or even food.In many of these situations,being able to reduce the temperature is important.And this would provide a way to do it."The Stanford researchers described their technologyin the science publication Nature.They say the main problem is creating actual cooling systemsusing the high-tech panels.They say it may be possible to develop a cooling spraythat could be used on existing solid structures.The researchers believe the cooling spray technologycould be developed in the next three to five years.They say as much as 15 percent of the energy used in the United Statesis spent providing power to air conditioning systems.And that's the VOA Learning English Technology Report.Give us a like on the VOA Learning English Facebook page.Follow us on Twitter at VOA Learning English.You can also watch videos on the VOA Learning English YouTube Channel.