New research reveals that Earth harbors a significant amount of hydrogen, approximately 6.2 trillion tons, hidden in rocks and underground reservoirs. This vast reservoir of hydrogen presents a promising opportunity to shift away from fossil fuels towards a cleaner energy source. While the precise locations of these hydrogen stocks remain unknown, just a small fraction of them could potentially sustain a hydrogen-based economy for up to 200 years. Hydrogen is recognized as a versatile and clean energy source that can be utilized to power vehicles, industrial processes, and generate electricity. The study estimates that tapping into only 2% of the identified hydrogen stocks would be adequate to fulfill global hydrogen requirements for a couple of centuries. Scientists have traditionally believed that hydrogen easily escapes from rocks due to its small molecular size. However, recent discoveries in West Africa and an Albanian chromium mine have challenged this notion, highlighting that hydrogen can indeed accumulate in Earth's subsurface reservoirs. The research emphasizes that natural hydrogen can be stored in reservoirs without the need for additional energy inputs, making it a potentially more convenient energy source than artificially produced hydrogen through electrolysis. The future implications of this discovery are significant, with hydrogen projected to play a substantial role in the global energy landscape. By 2050, hydrogen is expected to contribute up to 30% of the energy supply in various sectors. This sustainable energy solution could help address the increasing global demand for energy while reducing reliance on traditional fossil fuels. The researchers are actively working to determine the geological conditions necessary for hydrogen accumulation, paving the way for potential advancements in utilizing this abundant natural resource.