The significance of environmental sustainability in urban planning lies in its ability to create livable, resilient cities that minimize ecological footprints. Sustainable practices incorporate considerations like green infrastructure, energy efficiency, and waste reduction, promoting the efficient use of resources. Urban planning that prioritizes sustainability helps mitigate climate change, enhances air and water quality, and preserves green spaces essential for biodiversity and human health. Overall, integrating sustainability principles fosters more adaptive, thriving urban environments that can withstand future environmental challenges.