Green technologies have emerged as a key player in combating environmental degradation and driving sustainability across various sectors. These eco-friendly innovations aim to reduce harm, regenerate natural resources, and promote sustainable practices. This article provides an extensive review of green technologies, including renewable energy, sustainable transportation, waste management, energy efficiency solutions, and many others. The article explores how green technologies, such as solar power, biofuels, and smart grid technologies, are leading the way toward a sustainable future. However, despite their benefits, the adoption of these technologies faces several challenges, including high initial costs, lack of infrastructure, and limited public awareness. Overcoming these obstacles requires collective efforts from policymakers, industries, and the general public to accelerate the transition to a greener economy. Ultimately, green technologies hold the potential to create a cleaner, healthier, and more sustainable world for future generations.