Hydrogen resources found underground could offer a completely different way of producing low-carbon hydrogen. Investors are betting on this technology, governments are granting exploration licenses, and commercial agreements are already being signed. But despite the excitement, major scientific and commercial uncertainties still remain. Listen to the conversation between Camila Fontana, Deputy Bureau Chief at Argus in São Paulo, and Paris-based Pamela Machado, a contributor to the Hydrogen and Future Fuels report. Topics discussed in this episode include: Potential advantages of geological hydrogenExploration projects already announced across several continentsPotential for production at commercial scaleCaveats and particular characteristics of hydrogen as an energy sourcePresence of helium gas in reservoirsDiscoveries in Latin America