Shade Is Infrastructure: Designing Cities to Survive Heat
This summer, Phoenix recorded 31 consecutive days above 110°F. In Delhi, rooftop temperatures climbed so high that tin-sheet housing warped. Paris, once known for temperate summers, is rewriting building codes to address lethal heat waves. Around the world, cities are learning a hard truth: extreme heat is not just uncomfortable, it is deadly.
Yet most urban policy still treats shade as an amenity rather than infrastructure. Trees are considered beautification, awnings a design flourish, green canopies an afterthought in the fight for limited budgets. The result is predictable: wealthier neighborhoods enjoy leafy streets and shaded parks, while low-income residents endure what researchers call the “heat gap”—a measurable difference in ambient temperature that maps almost perfectly onto race and income.
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