> Water vapor is a greenhouse gas and it'd be important to do the math to see how much better it is vs. other alternative fuels. With about 71% of the earth's

> Water vapor is a greenhouse gas and it'd be important to do the math to see how much better it is vs. other alternative fuels. With about 71% of the earth's surface covered by water, which constantly emits water vapor due to evaporation, the amount of water vapor added by also burning green hydrogen would likely be minuscule compared to the amount from natural surface evaporation. The huge advantage would be no carbon dioxide emissions from burning green hydrogen.