Affordable ways to fight extreme heat

Old solutions for dealing with heatwaves, such as umbrellas, water spray devices, and climbing plants, provide simple and low-cost methods to reduce temperatures in cities. Reviving these techniques, along with planting trees and developing natural cooling projects, has helped lower temperatures by between one and five degrees in some areas—despite challenges like tearing down umbrellas during storms and limited access for firefighting teams. Some cities are moving toward hybrid solutions, such as using climbing plants to create shade and channeling rainwater to cool areas, with a focus on water resource management to enhance natural cooling efforts.

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