Air travel looks like the last thing we are going to make climate friendly. If a global hydrogen economy replaced the current fossil fuel-based energy system a

Air travel looks like the last thing we are going to make climate friendly. If a global hydrogen economy replaced the current fossil fuel-based energy system and exhibited a leakage rate of 1%, then it would produce a climate impact of 0.6% of the current fossil fuel based system.[1] Also we haven't figured out how to make green hydrogen at scale. [1] https://agage.mit.edu/publications/global-environmental-impacts-hydrogen-economy https://agage.mit.edu/publications/global-environmental-impa...