Assuming you make your hydrogen purely by electrolyzing water, you still need a ...

		thaumasiotes on May 4, 2018 \| parent \| context \| favorite \| on: Why NASA's Next Mars Lander Will Launch from Calif... 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.