Rather than trying to change the temperature of the whole city, we can provide heat refuges at street level to make the city more functional on hot days.

We know that a comprehensive toolkit is needed to understand how we can cool the city in different places. Trees and greening are important but aren’t practical everywhere, and certainly not when they are used in isolation.

Designs that also include redirecting wind, controlling humidity and water and that consider thermal qualities of materials are necessary. There are also further opportunities for enhanced cooling that use virtually no energy.

For example, geothermal cooling (where wind is tunnelled underground and cooled by the earth) and misting are two tools that can actively reinforce cool space within cities.

https://theconversation.com/smart-urban-design-could-save-lives-in-future-heatwaves-33246

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