Scientists have unearthed large reserves of white hydrogen, a clean-burning gas, under mountains, offering a promising avenue for sustainable energy production. Also known as 'natural' or 'geologic' hydrogen, this resource presents a potential replacement for fossil fuels that contribute to climate change. Initially discovered in Mali in the 1980s, white hydrogen has since garnered interest due to its clean-burning properties. The gas, which produces only water when burned, is seen as a viable option for energy production in industries like aviation and steel manufacturing that have high energy demands. Recent research published in Science Advances has shed light on the abundance of white hydrogen beneath the Earth's crust, sparking interest in exploring this resource further. Countries like Spain, France, and Switzerland have shown enthusiasm for investigating potential white hydrogen deposits in European mountain ranges like the Pyrenees. While the discovery of natural hydrogen deposits presents a significant opportunity for clean energy, challenges such as identifying sufficient reserves and ensuring safety from potential leaks need to be addressed. Experts emphasize the importance of handling natural hydrogen with care to mitigate safety risks. Despite the obstacles, the potential of white hydrogen as a cleaner energy source compared to existing methods like gasifying coal or reforming methane is promising. By leveraging the Earth's natural processes to produce hydrogen, researchers aim to create a more sustainable energy future that reduces environmental impact and promotes cleaner energy production methods.