The asphalt in Phoenix is turning green, and not because of a strange natural phenomenon or some environmentalist campaign. Rather, it's a solar reflective coating that can reduce ground temperatures by 30 degrees Fahrenheit.
According to SmartPlanet, the city of Phoenix contracted the Arizona-based company Emerald Cities Cool Pavement to cover a 90,000 sq. ft. temporary parking lot with the greenish, paint-like substance called nano-concrete. The goal is to avoid the "heat island" effect in the downtown area which happens when asphalt stores heat emanating from the sun and amplifies the temperature in the vicinity.
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