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maxerickson
on May 4, 2018
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Why NASA's Next Mars Lander Will Launch from Calif...
Hydrogen is mostly produced by stripping it off of hydrocarbons; it's not really a carbon neutral fuel.
It
could
be, but it mostly isn't.
thaumasiotes
on May 4, 2018
[–]
Assuming you make your hydrogen purely by electrolyzing water, you still need a power source to do that. Unless your power source is carbon neutral, it doesn't make sense to say the hydrogen is.
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It could be, but it mostly isn't.