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Los Angeles paints streets white to stay cool

Los Angeles, California, in the summertime can be, for lack of a better word, a hellscape. It is the quintessential smog-laden, traffic-jammed, heat island, but a new initiative from Mayor Eric Garcetti aims to help cool the city by 1.67°C over the next 20 years. Part of the plan, Popular Science reports, is to paint over many of the city’s black roads with a reflective white coating called CoolSeal originally designed by the military to keep spy planes cool and hide them from satellite infrared cameras. Adding the coating to a patch of black asphalt can keep the area up to 5.55°C cooler, a difference that could prove vital as global temperatures continue to increase.  

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