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A Sunscreen for Pavement Could Help Keep Cities Cool


A Sunscreen for Pavement Could Help Keep Cities Cool
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Photo: Alex Wong, Getty Images
The heat domebaking vast swaths of the U.S. and Canada has put the dangers of extreme heat on display. It points to the need for urgent adaptation so that cities don’t overheat, and that means reducing the urban heat island. Absent planting more trees, there may be other solutions to help keep cities cooler as the climate crisis worsens.
Pavement Technology Inc. created a spray-on treatment for pavement, called A.R.A.-1 Ti, which it says can lower its temperature. Developed in collaboration with Louisiana State University researchers, the spray’s exact makeup is a trade secret, but it’s based on titanium oxide, a compound used in many sunscreens, white paints, and pharmaceuticals. Titanium dioxide is a photocatalyst, meaning ultraviolet rays activate the compound’s electrons, which absorb and disperse light and heat. ....

Orlando International Airport , United States , South Carolina , Charleston County , Union Heights , Pavement Technology Inc , Texasam University , Louisiana State University , Pavement Technology , ஆர்ல்யாஂடொ சர்வதேச விமான , ஒன்றுபட்டது மாநிலங்களில் , தெற்கு கரோலினா , சார்லஸ்டன் கவுண்டி , தொழிற்சங்கம் உயரங்கள் , நடைபாதை தொழில்நுட்பம் இன்க் , லூசியானா நிலை பல்கலைக்கழகம் , நடைபாதை தொழில்நுட்பம் ,