The article discusses a groundbreaking study by US Geological Survey researchers indicating that Earth's subsurface may hold trillions of tonnes of hydrogen gas, which could potentially fuel human activities for almost two centuries, significantly reducing dependence on fossil fuels. While acknowledging accessibility challenges, the study highlights the vast potential of hydrogen as a clean energy source that could replace fossil fuels in various applications. The research mentions natural processes that release hydrogen, previously underestimated but now recognized through discoveries in places like Albania and West Africa. By applying a model to estimate hydrogen volumes in the subsurface, geologists project that even a small fraction of this resource could meet global hydrogen demand for 200 years. The study emphasizes that although this hydrogen source is not renewable, its utilization could play a crucial role in decarbonizing the planet and speeding up the transition to net-zero carbon emissions. This discovery positions hydrogen as a key player in future energy supply, offering a promising avenue for energy independence and sustainability.