New biodegradable film keeps buildings cool without electricity

New biodegradable film keeps buildings cool without electricity

Every summer, heatwaves keep smashing records. The World Meteorological Organization reported that the past seven years were the hottest ever recorded. As cities keep warming, buildings and people rely more on air conditioning. Yet air conditioners use a lot of energy and produce carbon emissions that fuel climate change even further. Imagine if staying cool didn’t need any electricity at all. That idea just took a giant leap forward thanks to r…