Sentosa will introduce 10 "cool nodes and zones" by 2030 to help visitors beat the heat. SINGAPORE: As part of a plan to lower temperatures in parts of Sentosa by at least 4 degrees Celsius without the use of air-conditioning, Sentosa Development Corporation (SDC) will be implementing a network of 10 cool zones and nodes across the island resort. On Tuesday (Oct 7), the statutory board unveiled an islandwide initiative targeted at enhancing thermal comfort amid rising temperatures. By 2100,