The World Sustainable Development Outlook 2026 brings together selected best contributions from the 24^th Annual International Sustainability Conference of the World Association for Sustainable Development (WASD), held in London, United Kingdom, 23-26 June 2026. The different papers critically examine the intersection of Artificial Intelligence (AI) and Human Intelligence, not only in developing capabilities to effectively respond to the fast-moving development in AI, but also explores how technological innovation and human capabilities can work together to address contemporary sustainability challenges. The contributions examine a diverse range of topics, including AI governance, sustainable healthcare, renewable energy, education, employment, finance, food security, digital identity, and sustainable business development.