Hydrogen is a clean energy source that can be produced without emitting carbon. Scientists are working on new ways to make hydrogen using materials like biomass and greenhouse gases. They have developed methods that are cheap, efficient, and eco-friendly. By using special catalysts and materials that absorb CO2, they can make hydrogen without releasing any carbon. Technologies like biomass gasification, steam methane reforming, and thermal plasma show promise for clean hydrogen production. These advancements could help reduce carbon emissions from the energy sector.