While much of the world is answering extreme heat with more air conditioners, parts of China are experimenting with something very different. Across rooftops, bus stops, and public spaces, mist cooling systems spray ultra‑fine water droplets into the air. These droplets evaporate before reaching the ground, pulling heat from the surrounding air and cooling outdoor spaces within minutes. It’s not futuristic technology it’s basic evaporative cooling. The difference is scale. Instead of focusing only on private homes and offices, these systems are deployed across shared public areas where people wait, walk, gather, and commute. As heat waves grow more intense, the bigger question shifts from how we cool buildings to *how we cool cities*. #innovation #climate #China #urbanplanning #heatwaves