Hydrogen, praised for its role in fertilizer production and clean fuel, poses a dilemma as most current production methods release CO2 emissions. A review by researchers from leading universities suggests tapping into Earth's natural hydrogen reservoirs as a promising solution for a low-carbon future. The study indicates that the continental crust has generated sufficient hydrogen over millennia to fulfill humanity's needs for thousands of years. By developing an exploration strategy akin to helium prospecting, scientists aim to uncover hidden hydrogen accumulations, presenting a new frontier in geological exploration. Various crustal reactions produce hydrogen, including serpentinization and radiolysis, with the gas migrating through rock layers until trapped in geological formations. The research team stresses the importance of avoiding microbial consumption that could diminish hydrogen reserves. While some speculate on mantle-derived hydrogen, the study emphasizes crustal rocks as the primary source, with suitable settings like cratonic shields and volcanic belts offering potential traps. Real-world incidents in Mali, Kansas, and other locations hint at the presence of significant hydrogen deposits, prompting the launch of Snowfox Discovery Ltd. for targeted exploration. The initiative seeks to reveal "societally significant" hydrogen fields by integrating diverse disciplines like geophysics, microbiology, and reservoir engineering. Through advanced techniques such as seismic imaging and isotopic tracers, researchers aim to differentiate fresh hydrogen from ancient residues to build a clean hydrogen source. While natural hydrogen could complement blue and green hydrogen production, ensuring sustainable extraction practices is paramount. Regulators must establish monitoring protocols to prevent leaks and protect groundwater. By exploring Earth's hidden hydrogen reserves, the energy transition could benefit from a diversified clean energy mix and alleviate the burden on renewables. This innovative approach not only offers a pathway towards a greener future but also highlights the intersection of geology and the energy transition.