Clean energy refers to energy sources that produce little to no pollution, helping to protect the environment. Examples of clean energy include solar power, which harnesses sunlight, and wind energy, generated by wind turbines. These sources are renewable, meaning they can be replenished naturally and are not depleted over time. Using clean energy is essential for combating climate change and reducing our reliance on fossil fuels like coal and oil. By transitioning to clean energy, we can create a healthier planet, improve air quality, and promote sustainable development for future generations.