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Old cities in hot climates like spain, North Africa and Arabia (even America) were designed for the climate in mind.
The narrow courtyards provide shade from the sun, windows were placed across each other for maximum draft. Low buildings and tall wind catchers to create self sustaining natural air conditioning. Tall roofs, so heat could dissipate upwards, away from where people are living. Coated white paint on everything that wouldn't reflect sunlight onto peoples eyes, like roofs and what not.
With climate change effects being quite salient nowadays, isn't it time to go back to old city designs? America has these wide roads in the desert climates, essentially exasperating the problems; the invention of the AC is one of the least thought about technologies that shaped how the US would look.
Obviously you'd have to create places for cycle lanes and public transport, but they could be away from where most of the pedestrians are.
