Green hydrogen is a way to produce energy without producing harmful air pollution. It can be used in cars, homes, and other places as a clean fuel. To make green hydrogen, water is exposed to sunlight or other sources of renewable energy, like wind or solar. This splits the water into hydrogen and oxygen molecules. The hydrogen can then be used as a fuel for cars, homes, or other things, and the oxygen is released back into the air. Green hydrogen produces no air pollution, making it clean and environmental friendly.