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[–][deleted] 3 insightful - 2 fun3 insightful - 1 fun4 insightful - 2 fun -  (0 children)

Came here to say this, hydrogen can be used as fuel (don't put it in your fuel tank though, SERIOUSLY) because the combustion reaction is exothermic. Interestingly quite a few people seem to be buying in to this.