This book provides a comprehensive overview of environmental studies, combining scientific, technological, and social perspectives to promote a holistic understanding of our planet. It covers five areas: the nature and scope of environmental studies, ecosystems and biodiversity, pollution and waste management, social and legislative aspects, and the relationship between human population and the environment. Blending foundational concepts with real-world case studies, it emphasizes sustainable development, conservation, and environmental ethics. Designed for undergraduate students, it also serves as a reference for educators, policymakers, and individuals seeking to enhance environmental literacy. Practical fieldwork guidelines and interdisciplinary approaches encourage analytical thinking, bridging theory and practice. By integrating ecological principles with socio-economic and technological dimensions, this text inspires readers to become proactive stewards of the environment.