Quote:
Originally Posted by Osnabrueck  So what happens when we're all driving hydrogen cars? Will our cities become humid, muggy swamps? I don't know if I'm too crazy about the idea of hot water vapor being spewed everywhere, but maybe the effect is harmless in practice. |
Does not sound that ominous considering that currently it is [essentially] gassified coal being spewed--so water vapor seems a good alternative. Plus, vapors actually spend very little time on the surface and eventually climb to other layers of the atmosphere.