CleanTechnica: "Hydrogen isn't the answer: 0.7-1.5 billion tons of CO2e [equivalent] would make it a climate liability." I have long beaten the drum for hydrogen as a clean-energy solution helping decarbonize the trickiest sectors such as 'heavy industry, aviation, maritime shipping, and long-haul trucking.' But Michael Barnard's analysis gives me pause, as the leaks in the supply chain with hydrogen—used at scale—could result in up to 1.5 gigatons of CO2 equivalent each yr.