This book features a collection of high-quality and peer-reviewed papers from 2024 15th International Conference on Environmental Science and Technology, which was held in Xiamen, China, during November 21-23, 2024. These proceedings serve as a valuable record of the latest scientific advancements, methodologies, and discussions in various environmental disciplines. Key topics typically covered include environmental chemistry, engineering, biology, health, management and policy, climate change, sustainable development, renewable energy, water and soil management, toxicology, and waste management. The proceedings facilitate knowledge exchange among scientists, engineers, policymakers, and other stakeholders, promoting interdisciplinary collaboration and the development of innovative solutions to global environmental challenges.