The Liveability Challenge 2025 saw startups from Singapore and Canada claim the top prizes in a highly competitive field. Krosslinker's innovative solution focuses on providing round-the-clock cooling to cities through a zero-energy aerogel coating, with the potential to cut electricity costs significantly. Ayrton, the Canadian startup, aims to revolutionize hydrogen storage and transportation by reducing costs by up to 50%, attracting substantial funding for its proprietary process. Both winners received S$1 million in funding, demonstrating the global interest in sustainability solutions. The competition, with a record 1,200 submissions from 100 countries, emphasized the importance of addressing decarbonisation and extreme heat-related weather conditions. The event showcased diverse sustainability innovations, including plasma-based carbon dioxide recycling and green ammonia production from urban waste, underlining the growing focus on sustainable development and climate tech solutions.