Environmental sustainability is vital in combating climate change, pollution, and resource depletion. This chapter explores four domains, utilizing intelligent engineering and applied sciences. It first addresses pollution control, utilizing technologies such as electrostatic precipitators and AI-enabled monitoring. Next, it emphasizes waste management, focusing on waste-to-energy and AI in recycling. The third section evaluates sustainable construction, exploring bio-based materials and green practices. Fourth, it highlights climate change mitigation through clean energy, efficiency measures, and CCUS technology. Additionally, the chapter underscores interdisciplinary collaboration and cross-sectoral partnerships for innovative, sustainable solutions. With practical case studies, the chapter offers a comprehensive view of how technology contributes to sustainability, inspiring future research and collaboration.