How We Got Here: The Century That Learned to Cool Its Cities at Night

Historians of this century will note the fusion plants and the desalination spines, and they should. But when they explain how twelve billion people kept living through a +2.8°C world, they will also have to explain something humbler and older: the human habit of rescheduling life around heat. This week Lagos moved its markets into the dark, and it is worth remembering that this is not new — it is a rediscovery. For most of human history, the hottest latitudes lived by the sun's mercy: siesta cultures, night bazaars, the long noon pause. Industrial modernity briefly overrode that wisdom with air conditioning and the nine-to-five, then discovered, this century, that the grid could not always keep the machines running when everyone needed them at once. The corridors and reactors are the new adaptations. The night market is the recovered one. Both matter. The record will show that the future, under pressure, kept reaching back for the deep past — and that the reaching was itself a kind of competence.