Very recommendable! This video points out some of the issues with hydrogen power like where does the hydrogen actually come from or it's low energy density.
The video also does not forget to mention the Hindenburg Disaster of 1937, which nowadays goes easily unmentioned when hydrogen is hyped!
Last, but not least there are very long investment cycles in the airlines industry, we may not see any hydrogen powered planes on longer distance flights before another 10-20 years.
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