Green technologies are a large category of advancements aimed at encouraging sustainability and decreasing environmental effect. They are often referred to as sustainable or eco-friendly technologies. These technologies use cutting-edge scientific ideas and technical techniques to solve a variety of environmental issues, including pollution, resource depletion, and climate change. This chapter explores the foundations of green technologies, looking at their guiding ideas, practices, and technological features. It offers a thorough rundown of the major areas of green technology, such as energy-efficient procedures, waste management strategies, and renewable energy systems. Through examining these subjects, the chapter hopes to provide a comprehensive grasp of how green technologies support sustainable development and play a part in creating a future that is more ecologically conscious. In the worldwide fight against climate change and the creation of a sustainable future, green technology and renewable energy sources are leading the charge. These developments include a...