Scientists have developed a new method to produce clean hydrogen fuel from seawater. The method uses a low-cost catalyst made from ruthenium nanoparticles to facilitate the generation of hydrogen gas from seawater through electrolysis. The technology has the potential to revolutionize the production of hydrogen fuel, as it eliminates the need for expensive platinum-based catalysts currently used in the process. This breakthrough could help accelerate the transition to a hydrogen-based economy and reduce dependence on fossil fuels.