Clean energy sources are forms of energy that produce little to no pollution and have a minimal impact on the environment. Common examples include solar energy, which harnesses sunlight using panels, and wind energy, generated by turbines that convert wind movement into electricity. Other sources include hydropower, which uses flowing water to generate energy, and geothermal energy, derived from the Earth's internal heat. These clean energy sources are essential for reducing greenhouse gas emissions and combating climate change. They offer sustainable alternatives to fossil fuels, such as coal and natural gas, which contribute significantly to air pollution and global warming. Transitioning to clean energy can help create a healthier planet for future generations.