A group of MIT engineers has uncovered a groundbreaking method for generating clean energy by harnessing the power of recycled aluminum from soda cans and seawater. By dropping pretreated aluminum pellets into seawater, the researchers were able to produce hydrogen gas as a sustainable energy source. To speed up the reaction, they introduced caffeine as a stimulant, reducing the time needed for hydrogen production from two hours to just five minutes. The team is now working on a compact reactor that utilizes aluminum pellets, gallium-indium, and caffeine to create hydrogen on the spot for maritime applications. This innovation addresses the challenge of storing and transporting hydrogen, offering a promising solution for powering engines and fuel cells without carbon emissions. Additionally, the researchers have found a way to recover and reuse gallium-indium with a solution of ions from seawater, making the process cost-effective and environmentally friendly. This breakthrough paves the way for a more sustainable and efficient approach to clean energy production, with potential applications in marine vehicles and beyond.