Los Angeles tests pavement paint that fights climate change
Normal black asphalt absorbs around 80 to 90 percent of sunlight. This is a big concern in areas like Los Angeles that receive a lot of sunlight. The asphalt absorbs the heat and reflects it back, leading to urban temperature increases. The high temperatures, in turn, lead to more need for energy-sucking air conditioning. Methods for reducing the urban heat island (UHI) include planting trees, using asphalt made from cigarette butts, and using evaporation to cool buildings. Now, Los Angeles is set to become the first city to try a new method – cool asphalt paint.
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