This photo taken on August 21, 2026, shows the Paya Lebar Green office building that uses a hybrid cooling method in Singapore. Long dubbed an "air-conditioned nation", Singapore is experimenting with cooling alternatives from chilled beams to "passive displacement" to curb its thirst for energy-guzzling air-conditioning. (Photo by Roslan RAHMAN / AFP via Getty Images) / TO GO WITH AFP STORY: 'Singapore-Environment-Economy-Heat' Focus by Taryn NG