Comments by "Luredreier" (@Luredreier) on "Found And Explained" channel.

  1. The plane with the propeller doesn't burn hydrogen in a turbine at all. It uses fuel cells to produce electricity to drive electric engines, a completely different form of propulsion. Also burning hydrogen in turbines isn't entirely environmentally friendly if it's burned in air (in part because said air contains other things then just O2 but also because the temperatures in question allows other chemical reactions, with fuel cells you really just get one chemical reaction, oh, and another thing, planes fly high enough that some of the gas coming in is ozone, perhaps not ideal to burn that...)
    2