noon

Scientists built a sunflower-inspired cooling system that delivered 135% more cooling power at solar noon than a fixed horizontal surface

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Scientists built a sunflower-inspired cooling system that delivered 135% more cooling power at solar noon than a fixed horizontal surface

Representative Image of a sunflower-inspired cooling system tilting to optimize radiative cooling under direct sunlight (AI Generated Image) Researchers in China have developed a radiative cooling system inspired by the way sunflowers track the sun, with experiments showing a 135% increase in cooling flux at solar noon compared with a fixed horizontal version of the … Read more

In 2020, Phoenix coated 36 miles of roads to fight extreme heat; surfaces became 12°F cooler at noon, but heat exposure for pedestrians rose 5.5°F

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In 2020, Phoenix coated 36 miles of roads to fight extreme heat; surfaces became 12°F cooler at noon, but heat exposure for pedestrians rose 5.5°F

Phoenix coated 36 miles of roads to fight extreme heat Painting city streets with a light-coloured, reflective coating can cool the asphalt underneath, but it can also increase heat exposure for people walking on the road. That unexpected trade-off emerged from a major trial in the American Southwest. In 2020, the City of Phoenix Street … Read more