In the first episode of Climate Sense's second season, host Samantha Gross delves into the significance of hydrogen in the transition towards a zero-carbon energy system. Hydrogen emerges as a key player in decarbonizing energy end-uses that pose challenges for electrification. While currently produced from water or natural gas with high energy requirements, the future potential of geologic hydrogen offers a promising zero-carbon fossil fuel alternative. Noted experts like Ernie Moniz stress the essential role of hydrogen in complementing clean electricity for a sustainable energy economy, particularly emphasizing its applications in industry, transportation, and power generation. Sunita Satyapal, representing the U.S. Department of Energy, clarifies hydrogen's nature as an energy carrier with exceptional energy content, versatile applications as a fuel, and contributions to chemical processes. The episode aims to educate listeners on the misconceptions surrounding hydrogen and its diverse utility across various sectors, underlining the importance of integrating hydrogen into the energy transition for a greener future.