A recent study published in Nature Reviews Earth and Environment sheds light on Earth's hidden clean energy potential in the form of natural hydrogen. Scientists believe that the Earth's crust contains significant reservoirs of hydrogen, created underground through natural geological processes over billions of years. This hydrogen could potentially meet today's energy demand for over 170,000 years without any carbon emissions, drilling for oil, or massive refineries. Natural hydrogen is seen as a game-changer in the energy sector due to its clean energy attributes. Researchers are actively working to understand the geological conditions that lead to the formation and storage of hydrogen underground. Certain types of rock formations, particularly ancient volcanic structures and mineral-rich areas, have been identified as potential sources of natural hydrogen. Regions like Kansas and Albania have shown promise, with specific rock formations capable of releasing hydrogen when in contact with water. Several companies, supported by prominent investors such as Bill Gates and BP, are investing in scaling up exploration and extraction of natural hydrogen. This interest is driven by the stability and reliability of hydrogen as an energy source, unlike solar and wind power which depend on weather conditions. Despite some challenges like microbial consumption of hydrogen and the complexity of identifying viable hydrogen reservoirs, researchers are optimistic about the potential of natural hydrogen to revolutionize sustainable energy production. The study serves as a foundation for leveraging this overlooked resource to create a significant and emission-free energy source.