The Earth's ancient continental rocks have been a source of natural hydrogen for billions of years, presenting a vast potential for green energy production. This natural hydrogen store has recently gained attention for its role in the global hydrogen economy, with significant interest from governments, venture capital investors, and international resource companies. Despite the existing barrier of regulatory challenges in some regions, natural hydrogen has the potential to revolutionize industries such as fuel refining, food sustainability through ammonia and fertilizer production, and steel manufacturing. The transition to green hydrogen, essential for decarbonizing critical sectors, remains costly due to its production from fossil fuels. However, natural hydrogen offers a comparable carbon footprint to green hydrogen, indicating a promising complementary resource in the shift towards cleaner energy sources. The U.S. Geological Survey's estimation of 200 years' worth of accessible natural hydrogen showcases the vast potential this resource holds. The renewed interest in natural hydrogen, fueled by discoveries in Mali and historical data publication, has sparked a global exploration wave. With the similarities between natural hydrogen and helium systems, the potential for harnessing both elements as clean energy resources is gaining traction, further emphasizing the importance of Earth's hydrogen reserves for a sustainable energy future.