Perhaps because we’ve become so adept at cooling inside spaces with air conditioning, we’ve forgotten the importance of cooling outside spaces, too. There is no technology that cools the outdoors as effectively as a tree. These communal parasols are also misting machines that dissipate heat. It’s hard to feel that effect under one or two of them, but get enough trees together and an urban summer can be as fresh as a rural spring, a feat with major implications for energy use and public health.

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As intense heat bears down, we have to see shade as a basic human right. We have forgotten that shade is a natural resource. We don’t grasp its importance, and we don’t appreciate its promise for a better future. Loggers and farmers cut down forests, forcing animals to flee and land to turn fallow. Engineers ignore time-honored methods of keeping out heat, locking us into mechanical cooling systems that fail during blackouts. And urban planners denude shady parks and pave neighborhoods with heat-sucking roads, only to drive us mad with the infernal conditions. But shade is a path to a better future—if we just learn to value it again, and design for it in the places we live.