The “Sisterhood” Protecting Indonesia’s Coral Reefs — 2026-08-18

Impact Vector: Good News · Aug 18, 2026 · 2m

## Short Segments Rooftop rainwater could help cities break free from the air conditioning trap. Researchers at the University of Manchester have developed a model that uses rainwater collected from rooftops to cool buildings through evaporation. This system, tested in Tokyo, could reduce energy demand and lower urban temperatures by spraying water onto building surfaces during heatwaves. Interestingly, the timing of when the water is sprayed is more crucial than the amount of water stored. This approach offers a practical solution for cities facing more frequent and intense heatwaves…