![]() ![]() This text may not be in its final form and may be updated or revised in the future. NPR transcripts are created on a rush deadline by an NPR contractor. Visit our website terms of use and permissions pages at for further information. (SOUNDBITE OF BUN B, STATIK SELEKTAH, MEECHY DARKO, CJ FLY AND HAILE SUPREME SONG, "SUPERSTARR")Ĭopyright © 2023 NPR. WELLS: Meanwhile, LA will continue to expand its program, allotting $4 million to make more streets cool in the coming year.įor NPR News, I'm Caleigh Wells in Los Angeles. SHICKMAN: In Australia, in southern Europe, in Athens, for example, so it's definitely something that's taking hold. And he says there's growing interest in this tool not just in the U.S., but around the world. They work with governments and experts in different fields to help cities reduce their heat risks. WELLS: Kurt Shickman leads a group that focuses on extreme heat at the Adrienne Arsht-Rockefeller Foundation Resilience Center. KURT SHICKMAN: Las Vegas and Miami, Orlando. Phoenix and San Antonio are doing this too. Turner says that while shade is a much more effective way to keep people cool, these reflective streets have a role to play. WELLS: Cities are trying other things, too, like planting trees and making roofs more reflective. And then it's kind of a really successful implementation of an intervention. And so, you know, when they're walking, they will feel cooler, and their pet's paws will be cooler. And in the evening time, they want to go out and walk their dogs. ![]() TURNER: Maybe people are at work during the day. Turner says it might not be great for a school where kids are out playing in the middle of the day, but in a residential neighborhood. ![]() So whether or not cool pavements work depend on when they're used. WELLS: That means a person walking at midday might actually feel hotter. TURNER: It does reradiate a certain amount of heat back at any object that is directly above it in the midday hours, from about 11 to 1. But she says it's not as effective at curbing heat at other times. The street isn't giving off that oven effect because it didn't absorb as much heat during the day. WELLS: She says that works best in the late afternoon. KELLY TURNER: They work at doing a specific job, which is to curtail the amount of heat that's absorbed by asphalt. She's an urban planning and geography professor at UCLA. WELLS: Since these streets were first put in, researchers have been trying to quantify just how much they do help. WELLS: Some of his neighbors, like Carolyn Anderson, aren't so sure.ĬAROLYN ANDERSON: I don't think it makes a big difference in terms of temperature. Still hot, but, like, I think it makes a little bit of a difference. And I was walking, and it was like - it felt like a wave, almost, you hit. RYAN SOLOMON: I thought it was a silly idea until they did one half of the street before they did the other half. WELLS: Ryan Solomon, who lives on a cool street in West LA that was painted last year, says it helps. WELLS: Since the city started this program, they've added hundreds of miles of what they call cool pavement. PARFREY: If you brought a laser thermometer out on that street, you would see a distinct difference between traditional asphalt and the newly applied material. But overall, it's not as light as you'd think. He says the color varies street to street because there are a couple different paints they use. ![]() WELLS: Jonathan Parfrey directs a nonprofit called Climate Resolve that has partnered with the city on this project. JONATHAN PARFREY: So the color doesn't look that different. Since 2017, the city of Los Angeles has been trying to fight that effect by painting roads with a more reflective paint to bounce the sun's energy back into space. Unlike forests or water, buildings and roads absorb heat from the sun and radiate it back out, amplifying the heat. Caleigh Wells form member station KCRW reports on one initiative in Los Angeles that’s trying to bring down the temperatures by painting the streets.ĬALEIGH WELLS, BYLINE: When a heat wave hits, cities are at a big disadvantage. Some urban areas are experimenting with different solutions to keep cities cooler. Climate change is making heat waves like the ones currently plaguing parts of North America and Europe hotter, longer and more frequent. ![]()
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