This book compiles state-of-the-art studies and real-world applications in ecosystems and smart environments. It covers important subjects like creating a sustainable economy, green and renewable energy, and IoT-powered industrial and agricultural systems. Along with providing insights into theory, modelling, and the deployment of smart cities and infrastructure, the book also examines the use of AI in the earth and environmental sciences and economy. The book is intended to be a priceless tool for scholars, professionals, and recent graduates. It acts as a manual and source of inspiration for promoting environmentally friendly technologies and sustainable solutions. It opens the door for creating intelligent systems that maximise resource use, reduce carbon footprints, and enhance general quality of life by incorporating the most recent technological developments.