A recent study published in Science Advances highlights the vast potential of natural hydrogen reserves as a sustainable energy solution. Researchers estimate trillions of tons of this clean energy resource lay underground, surpassing global oil reserves by 26 times. While challenges exist in locating and extracting these reserves due to depth and economic factors, just 2 percent of the reserves could power the world for 200 years and aid in carbon neutrality. Natural hydrogen, generated through geological processes, is seen as a promising alternative to hydrogen produced via water electrolysis. The study notes the uncertainty in current modelling techniques, with estimates of hydrogen quantities ranging from 1 billion to 10 trillion tons. Efforts are underway to refine geological criteria to better pinpoint recoverable reserves. If successfully accessed, natural hydrogen reserves could revolutionize the global energy landscape by providing a sustainable, low-emission replacement for fossil fuels. The optimism among researchers is high, with expectations of sharing more insights by 2024.