Do skyscrapers need. . . sunscreen? This is Sandra Tsing Loh with the Loh Down on Science. It’s a concrete jungle out there, and a HOT one! Cooling big city skyscrapers with AC burns LOADS of energy. Could we save money and the environment by slathering buildings with sunscreen? Xiangyu
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![Chicago's skyline](https://lohdownonscience.com/wp-content/uploads/2020/12/2101-04_Skyscraper_Sunscreen-900x480.jpg)