Greenland is an important indicator for world climate health, don’t support any dangerous idea there pls. Try Choosing alternate methods.

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Hydrogen in gas form regularly escape atmosphere and there’s no long term study about what will happen if we mass produce it

Hydrogen gas cannot be safely stored, the container will get metal fatigue unless reforged regularly

Hydrogen gas is so small that it can pass through almost everything

Edit: add double new line to prevent someone from trying to derail the subject