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URBAN HEAT ISLAND EFFECT
Argonne modeled Chicago’s August 2021 heatwave with different roof types; white roofs lowered air temperature by nearly 2°C and cooling energy use by 16.6%- Berkeley Lab built a roof coating of vanadium dioxide that flips at 67°C; across 15 US climate zones, it outperformed existing coatings in 12 and cut household electricity by 10%
- In 2023, researchers found shade cooled Singapore streets by 0.8°C across 20 sites. Today, vegetation is estimated to save 228 GWh of energy yearly
- Phoenix swapped black asphalt for a reflective road coating; noon surface heat fell 12°F, but pedestrians faced higher radiant heatIn an effort to lower urban heat, Phoenix tested innovative reflective pavement coatings on its roads, revealing that treated asphalt kept ...25 Aug, 2026, 03.31 PM IST
- Illinois researchers tested a passive cooling film in Houston; treated metal roofs measured more than 40°F cooler in direct sunlightAs American summers heat up, public health risks escalate, prompting researchers to create an innovative coating that cools metal roofs by ...25 Aug, 2026, 02.40 PM IST
- Phoenix installed nine temporary shades across parks to fight extreme heat; surfaces became 46°F cooler, while adding a solar-run mister lowered air temperature by another 10°FPhoenix tested nine temporary, artist-designed shade structures across its parks in 2025 as part of an experiment to tackle extreme heat. T...25 Aug, 2026, 01.10 PM IST
- In 2024, Phoenix City Council planned to plant over 27,000 new trees and build 550 new shade structures under a $60 million plan to combat extreme temperaturesIn 2024, Phoenix City Council planned to plant over 27,000 new trees and build 550 new shade structures under a $60 million plan to combat ...24 Aug, 2026, 10.48 PM IST
- In 1992, deadly category 5 Hurricane Andrew caused massive destructions in Florida, 34 years later as rising sea level flooding threatens nearly 40 per cent of U.S. population, Miami, other areas are showing how to be ready for doomsdayAs global average temperatures climb because of fossil fuel emissions, so do sea levels, making low-lying coastal cities vulnerable to floo...24 Aug, 2026, 09.27 PM IST
- Philadelphia painted black pavement with a light-coloured coating to fight extreme heat. A year later, researchers found one clear differenceTo tackle urban heat island effects, Philadelphia is trialing cool pavement solutions. In Hunting Park, a reflective light-colored coating ...24 Aug, 2026, 08.45 PM IST
- A reflective roof coating reduced peak roof temperature by 14.1°C and indoor temperature by 2.4°C; later research found evaporative cooling could add further benefitsInnovative roofing technologies are changing the game for building temperature regulation. By utilizing white reflective coatings, sunlight...19 Aug, 2026, 02.20 PM IST
- Over 2 years, across Miami-Dade, more than 9,000 trees reveal a hidden journey of heat: Mature canopies can pull temperatures down by 10°F, turning scorching streets into cooler urban spaces for residentsTrees offer significant cooling benefits to urban areas. FIU researchers found that tree canopy coverage can reduce temperatures by ten deg...18 Aug, 2026, 10.23 PM IST
- A cement-based paint that "sweats" water kept a model house more than 4.5°C cooler than conventional white paintInnovative researchers have unveiled a remarkable paint designed to keep buildings cooler by absorbing moisture. This advanced formula not ...18 Aug, 2026, 06.40 PM IST
- This hotspot is getting hazardousGlobal humid heat exposure has surged significantly, with India experiencing a nineteenfold increase. Poor urban planning and construction ...16 Aug, 2026, 10.45 PM IST
- Morocco swapped scorching black asphalt for porous “sponge” pavement; the experimental surface ran up to 16°F cooler, offering cities a surprising new way to beat urban heatMorocco is testing permeable “sponge” pavement in selected urban areas of Marrakech and Agadir as cities look for ways to manage extreme he...15 Aug, 2026, 10.50 PM IST
- Since 2025, University of Manchester researchers modelled 2,300 urban canal sections across Great Britain and Ireland. Now, the study shows canals can lower nearby temperatures by as much as 2.3°C during heatwavesUrban canals cooling: Urban canals provide a notable cooling effect on surrounding areas, particularly during heatwaves. This natural cooli...14 Aug, 2026, 09.31 PM IST
- Austrian researchers 3D-printed porous ceramic cubes for passive cooling; one water-filled prototype cooled nearby air by nearly 7°C without electricityResearchers from Austria have created groundbreaking 3D-printed ceramic cubes designed for passive cooling applications. Utilizing the prin...10 Aug, 2026, 05.25 PM IST
- In 2011, New York tried a simple way to beat peak summer heat by painting rooftops white; here’s how it helped cool citiesIn a proactive initiative starting in 2011, volunteers in New York City painted rooftops white to tackle the challenges of urban heat. This...09 Aug, 2026, 10.15 AM IST
- In 2019, scientists tested a diaper-like superabsorbent polymer in lab-made asphalt samples; the water-storing material cooled the specimens by up to 12°CResearchers from China have pioneered a groundbreaking asphalt composite integrated with superabsorbent polymers aimed at cooling city envi...08 Aug, 2026, 07.04 PM IST
- Rooftop rainwater could help cities stay cooler and cut heatwave days, study findsCollecting rainwater and spraying it on rooftops may cool cities during heatwaves. This system uses evaporative cooling to lower roof tempe...08 Aug, 2026, 03.48 PM IST
- Researchers replaced a bare roof with plants; green roof surfaces stayed 30 to 40°F cooler in summerGreen roofs cool surfaces by up to forty degrees Fahrenheit, reducing urban heat island effects. Evapotranspiration from plants cools build...05 Aug, 2026, 06.03 PM IST
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