MIT engineers have developed a groundbreaking aluminum-based process for producing hydrogen gas as a clean energy source. This process combines seawater, recycled soda cans, and caffeine to trigger a reaction that efficiently breaks up water molecules, resulting in the production of pure hydrogen. The researchers conducted a comprehensive 'cradle-to-grave' life cycle assessment to evaluate the environmental impact of the new method at an industrial scale. The study, published in Cell Reports Sustainability, reveals that the process generates a fraction of the carbon emissions associated with conventional hydrogen production, emitting only 1.45 kilograms of CO2 per kilogram of hydrogen. This low-carbon footprint positions the aluminum-based method on par with other green hydrogen technologies powered by renewable sources like solar and wind energy. MIT's lead author, Aly Kombargi, highlights aluminum's potential as a clean energy source, emphasizing a scalable pathway for deploying low-emission hydrogen in transportation and remote energy systems. The research team's innovative approach involves treating aluminum with gallium-indium to puncture its natural shield, enabling the production of pure hydrogen when mixed with seawater. The use of recycled aluminum and seawater in the process leads to significant emissions savings compared to mining primary aluminum. By leveraging sustainable practices and a cost-saving cycle, the researchers have identified an environmentally friendly scenario for aluminum-based hydrogen production. This study signifies a major advancement in the quest for green hydrogen technologies and demonstrates the potential for a more sustainable future in energy production and transportation.